If you must cancel your trip, immediately notify Mammoth River Adventures by email or by phone. If email cancellation is received (please call to verify) before the final balance is due, you will be given a refund less the amount of the deposit, processing fees, and booking fees. Deposits, processing fees, and booking fees are non-refundable. If cancellations are made on or after the final due date, no money will be refunded. Under certain circumstances you may be able to reschedule your trip. If you are unable to go on a trip, you are welcome to find a replacement for yourself. Please understand that we have very limited availability on our tours. Once you’ve signed up, we lose the right to sell your reserved space to other individuals or groups. Therefore, we regret that we cannot make exceptions except under extreme circumstances.