It depends on the activity – Some sell out within days of being posted, while others may be available on the day of the event. Sports leagues have limited space for teams and individuals, and are dependent on getting the appropriate number of male/female players. Register as soon as you know you can play so you don’t miss out! Day ski trips can fill up when it snows, but if it’s several days prior, we may add another bus – it’s always worth a call. For weekend overnight trips, we need 3-4 weeks lead-in to determine whether to pay for rooms or release them. Any vacations, especially with airline tickets, have registration deadlines months in advance. Check the website and book your travel by the dates indicated.