Tried this for the first time yesterday. It was blazing hot and the water was wonderfully cold. You need a nice afternoon free cuz it takes about four hours once you start your float down. Bring sunscreen, ropes and a squarish cooler for lunch and beer or soda. (Also marshmallows, not for eating....trust me on this ;-)
Please reapply sunblock! You will fry otherwise!!!!
My only concern would be for those who want to bring younger kids. First of all, ALL kids must be over the age of eight. Some of the rapids can toss you around a little bit so just keep an eye on the kiddos. Plus, there are lots of college kids drinking. Now, we had no problem with them, but some drunk guys did ask me to show them my boobs. They took my refusal in stride, but maybe it isn't appropriate for small kids. Some girls will flash and maybe you dont want your kids to see that....so....just a warning.
Otherwise we had a great time. I will definitely be back!