My information on this park is rather limited. I arrived here in mid March - having driven through a blinding snow storm. The park was wonderful but I didn't do much camping or hiking. This park is presently unrated due to weather conditions.
There were many trails along the cliffs edge but they were closed due to the weather. I personally wouldn't have felt comfortable hiking with young kids along the cliffs edge. There are many turn-outs with very short walks to vista points. If you have kids that like to slither under railings I'd keep a close eye on them here.
All the water I saw was frozen! There was water available at the Ranger Station, but I'm not sure about the campgrounds. The rock formations in the park are called Hoodoos - meaning 'pillar of rock' and these hoodoos are incredible!
Located in Southwestern Utah, an easy drive from Zion National Monument. Just go to the east from Zion on route 9 to 89 north. Hatch is the last town you'll come to before going east on route 12 to the park.