Inside the Park or an RV Park Outside: What Each One Costs

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Every national park trip in an RV comes down to the same choice for each night: a campground inside the park, or a commercial RV park in the town outside it.

The usual advice is “inside for the location, outside for the hookups.” That is true, and it does not help you decide, because it does not say what either one costs. So we priced one pair where both sides publish their rates, and read the rules of every campground on our 7-day Utah itinerary.

Inside Arches, Devils Garden Campground is $25 a night. A full-hookup site at an RV park in Moab is $70. Same rig, same night, $45 apart.

What the $45 buys turns out to be less about comfort than about two rules most people never read: when you are allowed to run a generator, and where you can empty your tanks.

The five campgrounds, side by side

Every one of these is a national park campground booked on recreation.gov. The prices are the RV site rates in recreation.gov’s published rate tables and the rules are from each campground’s listing, both read on 30 September 2026.

Campground	Park	Nightly	Power at the site	Generators	Dump station
Watchman	Zion	$45	30 A (a handful 50 A)	Not allowed	At the campground entrance
South	Zion	$35	None	8–10 a.m., 6–8 p.m.	Yes
Devils Garden	Arches	$25	None	8–10 a.m., 4–8 p.m.	None in the park
Fruita	Capitol Reef	$25	None	8–10 a.m., 6–8 p.m., Loop C only	Yes, with a water fill
North	Bryce Canyon	$30	None	8–10 a.m., 6–8 p.m., Loops A and B only	Mid-May to mid-October
Sunset	Bryce Canyon	$30	None	8–10 a.m., 6–8 p.m., Loop A only	At North, mid-May to mid-October

None of them has water or sewer at the site. Only Watchman has power. At the other five, you are on your own battery, and a generator is allowed for four hours a day — six at Devils Garden — and in some loops not at all.

Two more things in the rate tables are worth knowing. The price does not move. Devils Garden is $25 on a quiet Tuesday and on a holiday weekend, and the tables already list the same prices for 2027 and 2028. And at Zion and Bryce, the listings say holders of a lifetime Senior or Access pass get 50% off camping.

One pair, priced: Devils Garden and Moab

Arches makes the cleanest comparison, because the park and the town are close and both sides publish a fixed price. For the town side we used Moab Rim Campark, which puts its rate card on its own website — most RV parks around these parks do not, and quote a price only for the dates you enter. Its rates are quoted plus tax, for two people.

Where	Site	Busy season	Winter
Devils Garden, inside Arches	No hookups	$25	$25 (first-come, first-served)
Moab Rim Campark	30 A and water	$62	$42
Moab Rim Campark	Full hookup, 30 A and 50 A	$70	$44

In busy season the full-hookup site is $45 a night more. Over three nights that is $75 inside against $210 outside. The Moab park also lists holiday and event-week rates of up to $90 for the same site, which widens the gap to $65. Devils Garden stays at $25.

In winter it nearly closes: $19. But in winter Devils Garden is first-come, first-served — you cannot reserve it at all from November to February — so the $19 is also buying a site you know you have.

What the $25 site gives you

Location, measured in miles. According to the recreation.gov directions, the park entrance is 4.5 miles north of Moab, and Devils Garden is 18 miles up the park road from there. Stay in town and anything at the Devils Garden end of the park is a 22.5 mile drive each way, plus the town traffic, in the vehicle you are sleeping in. Stay inside and you are already there at sunrise.

It also gets you out of a queue: the campground is the only place in Arches you can sleep, and the park says it is usually full every night from March to October.

What the $25 site does not give you

Power, beyond your battery and a few hours

In our daily power budget, two people with no hookups use about 1,015 Wh a day. A standard lead-acid house battery gives about 600 Wh before you start damaging it. So every day you are about 415 Wh short, and that has to go back in somehow.

At a park campground, “somehow” has a timetable.

• Devils Garden gives you six hours: 8–10 a.m. and 4–8 p.m.
• Zion South, Fruita, Bryce North and Sunset give you four: 8–10 a.m. and 6–8 p.m. (Fruita moves the evening window to 5–7 p.m. in winter.)
• Watchman does not allow generators at all. In exchange, its RV sites are the only ones here with a pedestal, and it costs $10 more than South next door. We priced that difference in our hookup tier guide.

Outside those hours, the fridge, the furnace fan and the water pump all run off whatever the battery has left. If the rental’s generator is your plan, the plan only works inside those windows.

The alternative is to carry the power with you. A portable power station sized for a day of use — our generator vs battery comparison runs the numbers, and BLUETTI makes units in that range — is silent, so no campground has a rule about when you can use it.

The loop decides whether you get any generator hours at all

This is the rule that catches people. Three of these campgrounds allow generators in some loops only:

• Fruita, Capitol Reef: Loop C only, from 1 March through Thanksgiving weekend.
• North, Bryce Canyon: Loops A and B only. Loops C and D do not take RVs or trailers at all.
• Sunset, Bryce Canyon: Loop A only. Loops B and C are for tents and small camper vans.

Book a site in the wrong loop and your rental’s generator is dead weight for the whole stay. The loop is part of the site number on recreation.gov. Check it before you pay, not when you arrive.

A dump station — at Arches, anywhere in the park

Devils Garden’s listing puts it plainly: the park does not have dump stations, or hookups of any kind. There is drinking water at the campground, but nowhere inside Arches to empty a grey or black tank.

So the Arches stay has a shape. You arrive with empty tanks and a full fresh tank from Moab, and your grey tank is the clock on how long you stay. In our RV water system guide, a Winnebago Travato van has a 14 gal grey tank. That is not a week of showers. Devils Garden also limits any one camper to seven days a month, so the grey tank and the rule usually run out at about the same time.

The other parks are easier. Watchman, South and Fruita each have a dump station, and Fruita adds a potable water fill. Bryce’s dump station at North is free for registered campers but only open from mid-May to mid-October, weather permitting.

When the RV park outside is worth the money

Pay for the outside site when one of these is true:

• You have no way to cover the 415 Wh a day except a generator, and the campground’s windows — or its loops — will not let you run it enough.
• It is winter. $19 buys power, water, sewer and a reservation. Devils Garden cannot be reserved from November to February.
• You are staying more than a few nights in a small-tank rig. A sewer connection means you never have to break camp to dump.
• You need a rest day. Laundry, restocking, a long shower. Our Utah itinerary puts the last two nights in a Moab RV park for exactly this reason.

And stay inside when:

• What you came to see is deep in the park, and a 45-mile round trip each day is the real cost of staying in town.
• You can cover a day of power without a pedestal, or you are at Watchman, which has one.
• You got the reservation. At Devils Garden, from March to October, that is the hard part.

Choosing, in order

1. Can your rig cover a day of power with no pedestal? If not, you need Watchman, generator hours, or an RV park.
2. If you are counting on the generator, does your loop allow it? Fruita, North and Sunset each allow it in some loops only.
3. Where is the nearest dump station? At Arches, it is outside the park — in practice, back in Moab.
4. What is the gap tonight? Inside, the price is fixed. Outside, it moves with the season and the holiday calendar. At Moab Rim Campark it runs from $19 to $65 over Devils Garden.

When you book the outside option, a marketplace like Campspot shows many of the RV parks around these towns with live prices for your dates, which is how most of them publish their rates anyway. Check the type of the specific site you are booking — full hookup or water and power only — not just the park’s list of amenities.

If you take one thing away: a park campground is cheap because it gives you a place and nothing else. Before you book it, check the three rules that decide whether you can live there for a few days — when you can run a generator, in which loop, and where you will empty your tanks.