Reservations/bookings are best made a week in advance to guarantee enough space for your group at the time you would like.  Large groups, 10 or more, should book/reserve their activity or rental a month in advance.  Sooner the better. Day of reservations are available for most activities but available space is not guaranteed. Day of reservations need to be made at least 3 hours before activity start time to give us time to prepare proper equipment for your group.