Utah RV Parks: Camping the Mighty Five National Parks
A practical guide to RV camping near Utah's five national parks — Zion, Bryce, Arches, Canyonlands, and Capitol Reef — with honest park reviews and booking strategy.
Southern Utah’s five national parks — Zion, Bryce Canyon, Arches, Canyonlands, and Capitol Reef — sit within a roughly 900-mile loop of red rock, slot canyons, hoodoo amphitheaters, and high desert plateau. Collectively marketed as the “Mighty Five,” this circuit represents one of the greatest RV touring routes in North America, maybe the world. Each park has its own geological personality, its own camping challenges, and its own reservation quirks that can make or break a trip.
The catch is that doing it well requires genuine planning. You’re dealing with five separate reservation systems, elevation swings from 3,900 to 9,100 feet in a single day’s drive, summer heat that regularly cracks 110°F at the lower elevations, and a tunnel at Zion that can stop a Class A motorhome dead in its tracks. But the rewards are extraordinary — waking up beneath the Watchman formation, watching hoodoos turn orange at dawn, or picking ripe apricots at a campground orchard in Capitol Reef.
This guide covers every campground option worth knowing about near each of the Mighty Five, with honest assessments of hookups, rig size limits, cell signal, and the reservation strategies that actually work. Whether you’re planning a two-week grand circuit or cherry-picking a single park for a long weekend, here’s what you need to know. For more Utah RV parks and campgrounds, check our state guide.
Zion National Park Area
Zion is the crown jewel and the headache. It’s the most visited of the five parks, pulling nearly 4.5 million visitors annually into a canyon that’s only a few miles wide. The park’s mandatory shuttle system (operating February through November) means you don’t technically need to be inside the canyon to enjoy it — the shuttles run from Springdale too — but you do need a campsite somewhere within striking distance.
The key decision at Zion is whether to camp inside the park at Watchman, grab a site at the unreservable South Campground, or settle into one of the private RV parks strung along the Virgin River corridor between Springdale and the town of Virgin. Each option has legitimate trade-offs, and the right choice depends on your rig size, your tolerance for dry camping, and how far in advance you’re willing to plan.
If you’re specifically looking for a deep dive on Zion camping, we have a dedicated Zion National Park RV camping guide that covers every option in detail.
Watchman Campground (Inside the Park)
Watchman is the only reservable campground in Zion and the gold standard for location. You’re a two-minute walk from the visitor center and the first shuttle stop. Sites along the river loop (Loop C) have cottonwood shade and direct views of the Watchman formation glowing red at sunset. It’s the most convenient and scenic base camp for exploring the canyon.
The campground offers a mix of tent, standard RV, and electric sites. The electric sites in Loops A and B are the prize for RV campers — 30-amp service is a luxury inside a national park, and it means you can run your air conditioning during those brutal summer afternoons when the canyon acts like an oven.
- Hookups: Electric only (30 amp, Loops A & B)
- Sites: 176 sites, max 40 ft on paved pads
- Cost: $30/night (electric sites $50)
- Season: Year-round
- Cell signal: Decent on Verizon and T-Mobile near the entrance; spotty deeper in
- Dump station: Yes, near the campground entrance
- Reserve: Opens 6 months out on Recreation.gov — set a calendar reminder or you’ll miss it
Honest take: Watchman is worth the effort to book. The electric sites sell out within minutes of opening for spring and fall dates. Your best strategy is to be logged into Recreation.gov at exactly 10:00 AM ET on the day your dates open, with your payment info pre-loaded. If you miss the initial release, check back frequently — cancellations do trickle in, especially 2-3 weeks before arrival dates.
South Campground (Inside the Park)
South Campground is Zion’s other in-park option, a short walk from Watchman but operating on a completely different system. It’s first-come, first-served — no reservations, no exceptions. This makes it either a thrilling backup plan or a frustrating gamble, depending on your disposition.
- Hookups: None (dry camping only)
- Sites: 117 sites, most accommodating rigs up to 24 ft (tight)
- Cost: $30/night
- Season: March through October (closed in winter)
- Cell signal: Similar to Watchman
- Reserve: FCFS only — arrive early
Honest take: South Campground fills by mid-morning in peak season, sometimes earlier on weekends. If you’re in a smaller rig (under 24 feet), arriving by 8 AM gives you reasonable odds. Larger rigs should look elsewhere — the sites are tight and the maneuvering room is minimal.
Zion River Resort (Private, Virgin — 8 miles from park entrance)
When Watchman is sold out and South Campground feels like too much of a gamble, Zion River Resort in the town of Virgin is the cleanest private option in the corridor. It’s eight miles from the park entrance, which sounds like a lot until you realize the Springdale traffic can make the last two miles inside town take just as long.
The pull-through sites are genuinely spacious — 70 feet or more — and the full hookups mean you can run everything without worrying about battery or tank levels. The resort sits along the Virgin River, and some sites have direct river views.
- Hookups: Full (30/50 amp, sewer, water, cable TV)
- Sites: 200+ sites, big-rig friendly with pull-throughs up to 80 ft
- Cost: $65–95/night depending on season
- Season: Year-round
- Cell signal: Solid across all major carriers
- Notable: On-site store, pool, hot tub, dog park, laundry
Honest take: It’s a well-run commercial park that knows what RVers need. The price is steep compared to in-park camping, but you’re paying for full hookups, reliable hot showers, and the certainty of a reservation. Book 2-3 months ahead for spring and fall.
The Zion–Mt. Carmel Tunnel: This is the single most important logistical detail for RVers at Zion. The tunnel has a strict 11’4” height limit and 40-foot length limit. If your rig exceeds either dimension, you’ll need a ranger escort ($15, non-refundable) and can only transit during limited daytime hours. Oversized vehicles use both lanes, so traffic is stopped in both directions. If your rig is too large, plan your approach from the south via Springdale and skip the east entrance entirely. This affects your route planning for the entire Mighty Five circuit.
Bryce Canyon Area
Bryce Canyon sits at 8,000 feet on the Paunsaugunt Plateau — a fact that genuinely surprises people driving up from the desert floor of Zion. In under two hours you climb more than 4,000 feet, and the landscape transforms from red desert to ponderosa pine forest. The air is thinner, nights are cold even in June (lows in the 30s are normal), and the hoodoo amphitheater at sunrise is worth every degree of shivering.
Bryce is a smaller, more manageable park than Zion. The main scenic drive runs along the canyon rim with overlooks every half mile, and most of the best hiking drops down into the amphitheater from the rim. For RV campers, the calculus is simple: camp inside the park if you can get a site, or cross the highway to Ruby’s Inn if you can’t.
North Campground (Inside the Park)
North Campground is the more desirable of Bryce’s two in-park campgrounds. It sits right on the rim near the visitor center, and some sites on the canyon-side loops offer filtered views of the hoodoos through the ponderosa pines. It operates as first-come, first-served for most of the year, with a reservable season from late May through early September.
- Hookups: None (dry camping only)
- Sites: 99 sites, max 30 ft recommended (some sites tighter)
- Cost: $30/night
- Season: Year-round (limited sites in winter)
- Cell signal: Weak to nonexistent inside the park
- Elevation: 8,000 ft — generators and engines work noticeably harder here
- Reserve: Reservable via Recreation.gov in peak season; FCFS in shoulder months
Honest take: North Campground is a beautiful place to camp, but the lack of hookups at 8,000 feet means cold nights eat through propane fast. Your fridge and generator will work harder at altitude. Arrive before 11 AM in May through September for FCFS periods, or book the moment reservations open for the reservable window.
Sunset Campground (Inside the Park)
Sunset is Bryce’s second campground, slightly farther from the visitor center and the rim. It’s reservable during peak season and tends to have more availability than North because it’s perceived as the “lesser” option — which is only partially true.
- Hookups: None (dry camping only)
- Sites: 100 sites, similar size constraints to North
- Cost: $30/night
- Season: Late April through October
- Cell signal: Same weak-to-none coverage
- Reserve: Reservable via Recreation.gov in peak season
Honest take: Sunset is perfectly fine. The sites are a bit more exposed (less tree cover), but you’re still a short walk or drive to all the same trailheads and overlooks. If North is full, don’t hesitate to grab a Sunset site.
Ruby’s Inn RV Park & Campground
Ruby’s Inn is the inevitable fallback, and honestly a decent one if you can look past the gift-shop sprawl and tour-bus energy of the adjacent Best Western complex. It’s directly across Highway 63 from the park entrance — you can walk to the boundary — and the full hookups at elevation are genuinely welcome when temperatures drop into the 30s overnight and you want to run your heater without draining propane.
- Hookups: Full (30/50 amp, sewer, water)
- Sites: 200+ sites, pull-throughs available up to 60 ft
- Cost: $50–75/night depending on season and site type
- Season: April through October (limited winter camping)
- Cell signal: Moderate (Verizon strongest)
- Notable: Laundry, general store, heated pool, horseback rides
Honest take: Ruby’s Inn is a commercial operation that moves a lot of people through, and it shows. The sites can feel close together, and the atmosphere is more “busy resort” than “peaceful campground.” But the location is unbeatable, the hookups work, and having a hot shower and laundry after three days of dry camping in national park campgrounds is a legitimate comfort.
Moab — Arches & Canyonlands
Moab is the adventure hub of the Mighty Five circuit and base camp for two national parks. The town has more RV parks per capita than almost anywhere in Utah, which means you have options — but also competition for those options. Spring and fall weekends book out months in advance, and the town itself can feel overrun with Jeep tours and mountain bikers during peak season.
The two parks couldn’t be more different in character. Arches is compact, heavily visited, and has one main road with iconic landmarks every few minutes. Canyonlands is vast, remote, and divided into districts that don’t even connect to each other by paved road. Plan to spend at least three nights in Moab to do both parks justice.
Devil’s Garden Campground (Arches National Park)
The only campground inside Arches, Devil’s Garden is tucked among sandstone fins at the very end of the 18-mile park road. It’s a spectacular setting — red rock walls tower on three sides, Landscape Arch (the longest natural arch in North America) is a short hike away, and the night sky is remarkable.
- Hookups: None (dry camping only)
- Sites: 51 sites, some accommodating up to 30 ft (tight turns throughout)
- Cost: $30/night
- Season: Year-round
- Cell signal: None — completely off-grid
- Water: Potable water available at a central spigot
- Reserve: Opens 6 months out on Recreation.gov; sells out within minutes for March–May and September–October windows
Honest take: Devil’s Garden is not big-rig territory. Period. If you’re over 25 feet, measure twice and triple-check the NPS site for specific site dimensions before booking. The road in is paved but has tight switchbacks near the campground, and some sites require backing into spaces with rock walls on both sides. That said, if your rig fits, this is one of the most stunning campground settings in the entire national park system.
Devil’s Garden strategy: the reservation system is competitive but not impossible. Set alerts for cancellations 2-4 weeks before your dates — people’s plans change, and sites do open up. Midweek dates are significantly easier to book than weekends.
Willow Flat Campground (Canyonlands — Island in the Sky)
Most people don’t realize Canyonlands has camping, and that’s part of the appeal. Willow Flat sits in the Island in the Sky district on a mesa top with views that stretch to the La Sal Mountains. It’s a small, primitive campground that operates entirely first-come, first-served.
- Hookups: None (dry camping, no water available)
- Sites: 12 sites, most suitable for rigs under 28 ft
- Cost: $20/night
- Season: Year-round (no services in winter)
- Cell signal: Minimal to none
- Water: No potable water — bring everything you need
- Reserve: FCFS only
Honest take: Willow Flat is for self-sufficient rigs and campers who want solitude. Twelve sites means it fills less frequently than you’d expect — most visitors to Island in the Sky are day-trippers from Moab. But the lack of water means you need to plan your capacity carefully. Fill up in Moab before heading out.
Sun Outdoors Arches Gateway (Private, Moab)
Formerly known as Portal RV Resort, this is the most polished private option near Moab. The sites have red rock views, the pool is welcome after a day in 100-degree heat, and it’s a 10-minute drive to the Arches entrance and 30 minutes to Canyonlands’ Island in the Sky district.
- Hookups: Full (30/50 amp, sewer, water)
- Sites: 130+ sites, concrete pads, pull-throughs up to 65 ft
- Cost: $70–120/night (significant peak-season premium in April, May, September, October)
- Season: Year-round
- Cell signal: Strong across all carriers
- Notable: Clubhouse, pool, fitness center, laundry, camp store, direct Colorado River access nearby
Honest take: Sun Outdoors is expensive, particularly during peak season when rates push past $100/night. But the infrastructure is genuinely good — level concrete pads, reliable hookups, clean facilities — and having Moab’s restaurants and grocery stores a few minutes away makes it a comfortable base for multi-day exploration. If you’re spending three or four nights in Moab (and you should), the cost adds up but the convenience is real.
Capitol Reef — The Quiet One
Capitol Reef is the park most people skip, and that’s precisely its appeal. Sitting along the Waterpocket Fold — a 100-mile wrinkle in the earth’s crust — the park has geology as dramatic as anything in Arches, petroglyphs left by the Fremont people a thousand years ago, and historic orchards planted by Mormon settlers in the 1880s where you can still pick cherries, apricots, peaches, and apples in season.
The park sees a fraction of the visitation of Zion or Arches. On a Tuesday in May, you might share the scenic drive with a dozen other vehicles. The pace is slower, the silence is deeper, and the camping is among the most peaceful in the entire Utah national park system.
Fruita Campground (Inside the Park)
Fruita is first-come, first-served and sits among century-old orchards along the Fremont River. Deer wander between sites at dusk. The historic Gifford Homestead, a short walk away, sells fresh pies made with fruit from the orchards. It is, without exaggeration, the most idyllic campground in Utah’s national park circuit.
The sites are shaded by massive cottonwoods and fruit trees, and the sound of the Fremont River provides a constant backdrop. The campground rarely fills outside of holiday weekends and the peak of fall color season in October.
- Hookups: None (dry camping only)
- Sites: 71 sites, most accommodating rigs up to 26 ft (a few larger sites exist)
- Cost: $25/night
- Season: Year-round (reduced services in winter)
- Cell signal: Minimal — occasionally one bar of Verizon if you stand on the bluff above camp
- Water: Potable water available at spigots, dump station on-site
- Reserve: FCFS only — no reservations accepted
Honest take: Fruita is a hidden gem that’s slowly becoming less hidden. Even so, midweek availability is rarely an issue except during the busiest weeks of spring and fall. The 26-foot practical limit means larger rigs need to look outside the park, but if your rig fits, this campground alone is worth the detour to Capitol Reef.
Cathedral Valley (Backcountry)
Capitol Reef’s northern Cathedral Valley district contains some of the most otherworldly scenery in Utah — the Temples of the Sun and Moon, massive monoliths rising from a painted desert floor. There’s a primitive campground with six sites at the end of a rough dirt road.
- Hookups: None
- Sites: 6 sites (no RVs — high-clearance 4WD vehicles only)
- Cost: Free
- Access: Requires fording the Fremont River and 30+ miles of unpaved road
Honest take: Cathedral Valley is not an RV destination. But if you have a tow vehicle or a dinghy, it’s one of the most memorable day trips or overnight adventures in all of southern Utah. Unhook your trailer at Fruita and make the drive.
Capitol Reef has no entrance fee for the scenic drive — just the campground fee. This makes it the best value in the Mighty Five circuit. The paved scenic drive through Capitol Gorge and past the Hickman Bridge trailhead alone is worth a full day.
Campground Comparison: The Mighty Five at a Glance
| Campground | Park | Hookups | Sites | Max RV Length | Cost/Night | Reservation |
|---|---|---|---|---|---|---|
| Watchman | Zion | Electric (30A) | 176 | 40 ft | $30–50 | Recreation.gov |
| South | Zion | None | 117 | 24 ft | $30 | FCFS |
| Zion River Resort | Near Zion | Full (30/50A) | 200+ | 80 ft | $65–95 | Direct booking |
| North | Bryce Canyon | None | 99 | 30 ft | $30 | Reservable (peak) / FCFS |
| Sunset | Bryce Canyon | None | 100 | 30 ft | $30 | Reservable (peak) |
| Ruby’s Inn | Near Bryce | Full (30/50A) | 200+ | 60 ft | $50–75 | Direct booking |
| Devil’s Garden | Arches | None | 51 | 30 ft | $30 | Recreation.gov |
| Willow Flat | Canyonlands | None | 12 | 28 ft | $20 | FCFS |
| Sun Outdoors | Near Moab | Full (30/50A) | 130+ | 65 ft | $70–120 | Direct booking |
| Fruita | Capitol Reef | None | 71 | 26 ft | $25 | FCFS |
The Mighty Five Route: Planning the Circuit
The classic Mighty Five loop connects all five parks in roughly 900 miles. Most people start from Las Vegas (the closest major airport and RV rental hub), though Salt Lake City works too with a longer initial drive south. Here’s the practical way to run it.
Recommended Driving Order (Counterclockwise from Las Vegas)
Leg 1: Las Vegas → Zion — 160 miles, 2.5 hours via I-15 North. Straightforward interstate driving through the Virgin River Gorge. You’ll cross from Nevada into Arizona briefly, then into Utah. Arrive in Springdale or the park by early afternoon.
Leg 2: Zion → Bryce Canyon — 85 miles, 1.5 hours via US-89 North and UT-12. You climb from 3,900 feet to 8,000 feet. The road is well-maintained and RV-friendly, though the final ascent to Bryce has some switchbacks that feel dramatic in a motorhome.
Leg 3: Bryce → Capitol Reef — 120 miles, 2.5 hours via UT-12 and UT-24. This is one of the most scenic drives in America — the road crosses the spine of the Aquarius Plateau through Boulder and Escalante. Be warned: UT-12 has sections with steep drop-offs and no guardrails. Rigs over 40 feet will find it stressful. It’s manageable, but take your time.
Leg 4: Capitol Reef → Moab (Arches/Canyonlands) — 150 miles, 2.5 hours via UT-24 to I-70 East to US-191 South. The most relaxed driving day — mostly interstate and wide highway through open desert.
Leg 5: Moab → Las Vegas — 350 miles, 5.5 hours via I-70 West to I-15 South. A long haul, best broken with an overnight in Richfield or Cedar City if you’re not in a rush.
Distances and Elevation Summary
| Leg | Distance | Drive Time | Elevation Change |
|---|---|---|---|
| Vegas → Zion | 160 mi | 2.5 hrs | Sea level → 3,900 ft |
| Zion → Bryce | 85 mi | 1.5 hrs | 3,900 → 8,000 ft |
| Bryce → Capitol Reef | 120 mi | 2.5 hrs | 8,000 → 5,400 ft |
| Capitol Reef → Moab | 150 mi | 2.5 hrs | 5,400 → 4,000 ft |
| Moab → Vegas | 350 mi | 5.5 hrs | 4,000 → sea level |
Season Strategy
Spring (March through May) is the consensus sweet spot for the lower-elevation parks — Zion, Arches, and Canyonlands have warm days, cool nights, and occasional wildflower blooms. Bryce and Capitol Reef can still see snow into April, and nighttime temperatures at Bryce hover near freezing well into May.
Fall (September through October) is equally prime. Cottonwood trees turn gold in Zion’s canyon and along the Fremont River at Capitol Reef. Crowds thin after Labor Day, and the heat in Moab drops from punishing to pleasant. Many experienced RVers consider October the single best month for the circuit.
Summer (June through August) works for Bryce (pleasant at 8,000 feet) but tests human and mechanical limits in Moab and Zion, where temperatures regularly exceed 105°F and sometimes push past 110°F. If you must go in July, run the loop in reverse — start high at Bryce, work down to Capitol Reef and Moab in the relative cool of early morning, and end at Zion where you can cool off in the Virgin River.
Winter (December through February) is underrated for Zion, which has mild temperatures and virtually no crowds. Bryce gets genuine snowfall (hoodoos in snow are extraordinary), but road access can be limited. Capitol Reef and Canyonlands have reduced services. Moab is quiet and pleasant if chilly. A winter trip requires more self-sufficiency but rewards with solitude.
Time Budget
Budget two nights minimum per park, three for Moab if you want to see both Arches and Canyonlands properly. The full circuit takes 10 to 14 days at a comfortable pace. Rushing it defeats the purpose — this landscape rewards the slow approach. If you only have a week, pick three parks and save the other two for next time.
Planning and Logistics
Heat and Water
Southern Utah is genuine desert. Daytime temperatures at the lower elevations (Zion, Moab) routinely exceed 100°F from June through September. Your RV’s air conditioning will run hard, your fresh water consumption will spike, and your pets and traveling companions will need more hydration than they think.
Carry more water than you think you need, especially if you’re camping at Willow Flat (Canyonlands) or Fruita (Capitol Reef), where the next fill-up might be 30 to 50 miles away. A secondary portable water container — even a simple 7-gallon jug — has saved many a trip.
Reservation Strategy
The five parks use three different systems, which is exactly as annoying as it sounds:
- Recreation.gov: Watchman (Zion), Devil’s Garden (Arches), North and Sunset (Bryce, peak season). These open on a rolling 6-month window and sell out fast for prime dates.
- First-come, first-served: South (Zion), North (Bryce, off-peak), Willow Flat (Canyonlands), Fruita (Capitol Reef). Arrive early, have a backup plan.
- Private booking: Zion River Resort, Ruby’s Inn, Sun Outdoors. Book direct through their websites, usually 2-3 months ahead for peak season.
The winning strategy is to lock in your Recreation.gov reservations first (they’re the bottleneck), then build the rest of your itinerary around those confirmed dates. Private parks are your cushion — they almost always have availability if you book a few weeks out.
The Zion Tunnel Problem
If your rig exceeds 11’4” in height or 40 feet in length (including tow vehicle), you cannot transit the Zion–Mt. Carmel Tunnel without a ranger escort. Escorts cost $15 and are only available during staffed hours. This affects your routing because approaching Zion from the east (coming from Bryce) means going through the tunnel. The alternative is to approach Zion from the south via Hurricane and Springdale, which adds about 45 minutes but avoids the tunnel entirely. For the counterclockwise route described above, you approach from the south naturally — no tunnel needed.
Propane and Altitude
You’ll burn significantly more propane at Bryce Canyon’s 8,000-foot elevation than at Moab’s 4,000 feet. Cold nights at altitude mean your furnace runs more, and your fridge and water heater work less efficiently with thinner air. Top off your propane in Springdale or Panguitch before climbing to Bryce. The nearest reliable propane fill in Moab is at the various RV parks and the hardware stores on Main Street.
Cell Signal and Connectivity
Expect minimal to no cell signal inside most of the national park campgrounds. Verizon generally has the best coverage across southern Utah, followed by T-Mobile. AT&T coverage is notably weaker outside of Moab and Springdale. If you need to work remotely, plan to do it from the private RV parks or in the gateway towns — don’t count on connectivity inside the parks.
Frequently Asked Questions
What’s the best park for big rigs (over 35 feet)? None of the in-park campgrounds are truly big-rig friendly. Watchman at Zion (40 ft max) is the most accommodating. For rigs over 35 feet, plan on private campgrounds — Zion River Resort, Ruby’s Inn, or Sun Outdoors Moab — and day-trip into the parks.
Can I drive the full Mighty Five circuit in one week? Technically yes, but you’ll spend more time driving than exploring. Ten days is the realistic minimum for a satisfying trip. Two weeks is ideal.
Which park should I skip if I’m short on time? Most people skip Capitol Reef, which is a shame because it’s the most peaceful. If forced to choose, skip whichever park doesn’t align with your season — Moab in summer or Bryce in early spring.
Do I need a timed entry reservation for any of the parks? Arches National Park requires a timed entry reservation from April through October. These are separate from campground reservations and available on Recreation.gov. They release on a rolling 3-month window and in a last-minute day-before batch. Zion’s shuttle system effectively manages access without timed entry.
Is boondocking possible near the Mighty Five? Yes. BLM land surrounds much of the corridor, particularly near Moab and along UT-12 between Bryce and Capitol Reef. Popular free dispersed camping areas include the Willow Springs Road area outside Moab and the BLM land along Burr Trail Road near Capitol Reef. A 14-day stay limit applies on BLM land.
When do Recreation.gov reservations open? Reservations open on a rolling basis, exactly 6 months before the check-in date, at 10:00 AM Eastern Time. For high-demand campgrounds like Watchman and Devil’s Garden, be online and ready at the exact moment your dates open.
Keep reading
RV Parks Near Bryce Canyon: Hoodoo Country Camping Guide
Where to camp with your RV near Bryce Canyon — in-park campgrounds, Ruby's Inn, and the quieter options in Panguitch and Cannonville with real rates and specs.
Moab RV Parks: Your Basecamp for Arches & Canyonlands
The complete guide to RV camping in Moab, Utah — from Devil's Garden inside Arches to the full-hookup parks in town, with BLM boondocking spots and the honest truth about summer heat.
Zion National Park Camping: The RV Guide to Red Canyon Country
Everything you need to know about RV camping at Zion — Watchman Campground details, the 1.1-mile tunnel restriction, private parks in Springdale, and the reservation strategy that actually works.