We were told the same, good until 11:59PM the day of check-out. We did run into a small snafu trying to use up the remainder of the snack credits after check-put time at the Boardwalk store. However, the manager figured out that we had already checked out and said that there is a problem with running the credits through after check-out (not because it couldn't be done but because of the "system"). It took about an extra 5 mins or so to process but it went thru fine.