Oh, you'll have so much fun! I've been rafting three times on the New River in West Virginia. We went up to Class 4 rapids, and I had a blast. Rhinosaur is right, they have to scare you a little at the beginning. But when you get there, look around at some of the frailer, fatter, or older people lining up to do it. If they let those people do it, you'll be fine