Buy your tour tickets up front at the visitor center and get there early We got in at 8 and our tour was already booked till noon. Also, I would be weary about taking this drive with any RV longer than 30 feet. Trailers and Toads are not allowed. Very steep inclines and sharp turns. Breathtaking views and scenery. Watch your kids on the hikes as there are no barriers to the many drops below.
Great fun for the kids - easy RV in and out I guess up to 30-35 feet - no longer than that. Price is around 6 bucks per car but you are then walked to the gift shop where you can buy alpaca socks for $37. May be the most comfortable socks I've ever worn. The guide is friendly and knowledgable. Stay away from Hershey, the angry alpaca.
For RV'ers there are 3 to 4 RV/BUS spots. Easy in and out.
Clean and Nice but not that close to ZION as there is no real direct route but to trail north or south to get to the park.
Takes 3 minutes to take a pic and you're on your way. Kids like it.
Nice KOA. The pool is bit small and mini golf is bare bones but the location is quiet and a bit out of town. Nice views of the surrounding cliffs.
If you're picking someone up in a RV - DO NOT go to arrivals because the clearance is 9.5 feet. Keep right to departures and tell your party to meet you there. There are no signs right up until the lower deck which is a bit scary if you're not paying attention.