Bryce National Park

Also, you have to pay for an escort through the tunnel, and while that's happening, you'll be blocking all traffic in both directions.

The road into and out of Zion to the east isn't exactly motorhome-friendly even if you don't consider the tunnel. It might be better to take the long way around from Bryce--Hwy 20 west to I-15, south to Hwy 9 just north of St. George, thence into the park. Somewhat longer, but probably much easier.

If it's March or later in the year, you (and any other vehicles) may not even be admitted into the park, due to very limited parking (unless you have a campground reservation). You'd have to park in Hurricane and take the shuttle bus in. You also have to use the shuttle bus to visit the northern parts of the park road (Virgin Narrows, etc.) after March 1.

KOA in Panguitch. Not upscale but there are MH’s spots. Just outside of town and a pleasant drive to Bryce.

Red Canyon USFS CG 10 miles from Bryce.

Zion tunnel. Over 11’-4” high requires a permit. Over 13’-1” is prohibited.

Ruby's. It is right outside the entrance to Bryce.

Do be aware that the EAST entrance to Zion cannot accommodate vehicles taller than about 11 feet. If your motorhome is taller than that, don't even try it.