You wear Whitewater PFD (personal flotation device)
. It's amazing how many people who take the Do-It-Yourself Approach to rafting or do not use the right kind of raft, or do not wear a PFD. Walking on a commercial rafting trip, wearing a PFD is not an option, it is a requirement. And if you so unbuckle seat belts, the first rafting guide, which he says will gently remind you that putting yourself at risk so simply "is not acceptable.