We did the Half Day Canyoneering Tour (Somewhat Near Zion Park, but not in the park, tripadvisor has the title wrong). Our guide, 2 of us, and a family of four.
All of us agreed it was a blast. On the good end, of what the glossy ads imply.
Beautiful hike through a slot canyon near Mt. Carmel junction, with 7 rappels down otherwise impassable areas of the canyon. Guide taught rappelling to the 5 who had never rappeled, and refreshed my rappelling. We were in full control, fast or slow. The guide let out a safety rope to match our chosen descent speed.
Truly glad we went.