Had a great fun trip. We took Class 3. We had quite a few first timers, non-swimmers in our group and they ALL totally loved it. Our guides (we rent two rafts, one for all the kids and the other for all adults) made it all so easy and comfortable. At the end of the trip they surprised us with a home made brownie, which was delicious. I guess I can take trip with H2O just for that :-)