You’re booked in automatically
If a seat opens, the top of the list is booked straight in and charged one credit at that moment — no action needed from you. You’re told two ways: a message in your portal chat, which is the Messages button at the top of the portal, and a push notification on your phone. (There is no email — the portal message and the push are how you hear about it.)
Promotions stop at 1 PM for that day’s sessions. If you never get in, nothing is charged.