Simple. Just go to the visitors' center and fill out a waiver. You get put on a list and on this particular day, our wait time was 20 minutes. They give you a pager, like at the Cheesecake Factory and when it is your turn to ride the balloon, they page you and you head over to the loading dock.
Getting off the ground. Scary!
North is THAT way.
Started to clear up a bit.
She got up there all by herself. ;^)