The number of people per raft will vary from trip to trip depending on multiple factors including your group size, departure time, available boats, guide preference & safety measures. On the Snake River Whitewater Adventure the most that will ever be in a raft is 16 people.The Small Boat Whitewater Adventure can operate with 4 to 8 people. If you are booking a private raft you can have as many people you want-- up to 16. A guide will always be with you on our river trips to ensure a safe and exciting experience!