Nope. you can book it when you get here. Just remember, if its a really nice day, try to go out then. Book as soon as you get here so you can be on one of the first loads. Last year, we had 2 days of PERFECT weather. THen the last 2 days was a downpour. I sneaked into a slot for the Glacier when another jumper decided to do it later in the Boogie. He never got his chance because of the rain. How long are you gonna be up for? Just the boogie? Or make a little extended vacation out of it?