We like to encourage people to book as soon as you can as there is more chance of having your preferred dates and times available for your program. If your booking is for a large group of people (30+) or you have avery specific date/time in mind for your actvity, we would reccomend booking your trip 3 to 1 months before your desired activity date. If your group is smaller and you have more flexibility around your activity dates and start times, then you should be able to leave it a little later. It is very hard for us to accomodate large groups within 2 weeks notice especially in the busier summer months.