Things may have changed, but in 2000, we were literally on the bus back to AS (sports or movies...can't remember) to check out and head to MCO when we said, let's not go home yet. We stayed three more days and they were very accomodating...we did have APs that year, so we must have been on a room only reservation. We didn't even have to change rooms. I suppose if if is a very busy season you may have trouble, but otherwise you should be fine. Try checking the website (I know, I know) to see if they have availability in your resort for the days you are thinking about if its close.