During July and August we recommend that reservations be made at least 7 days in advance. During May, June and September we recommend that reservations be made at least one day in advance. We accept VISA & MASTER CARD. If you are booking in advance, a credit card number will be required. There will be no refund for cancellations that occur within 24 hours of the trip departure date and time. Reservation are not guaranteed until the receipt of a conformation e-mail.