As the title says, no reservations allowed. We arrived at 9am and there were plenty of people leaving and we had a few campsites to choose from. I believe we camped in loop D. We camped 1 night on a Friday in mid-May and it was cold - upper 30's at night - and windy, so be prepared. The elevation is higher than Zion and some other places in Utah, hence the difference in weather.

The campsites were clean, the bathrooms were clean, and it was very quiet. Most people were burning fires in the evenings and went to bed by 9. There isn't much to do in the town or the campground, so you can expect the same. Camp right by your car, some tree cover and a nice picnic bench. 200 yards or so to the Canyon. Quite a bit further to the lodge but easily walkable in 10 minutes.

Favorite Hike - Fairyland Loop - get away from the crowds and get into the canyon.

Enjoy!