I have read on these boards, but can't find it now, that you can sometimes (usually) present it the next day when you are staying on an AP rate. Just show them the green card certificate, if they ask, and tell them you will come back with the activated AP later. I have the green card certificate and will need to go activate it. I check in on Thursday. I have read I can go to a park, activate it, and enjoy my evening, and just show my AP the next day, Friday. Is this still correct? Comments? Has anyone done this recently? And what happens if you don't go show them the activated AP until Sat, checkout day? Since it is an AP rate, I will pay the balance at checkin. Will they charge rack rate if I don't have the activated AP?