I had put in a code online that I wasn't sure would still work for Great Wolf Lodge in the Poconos. It gave me a rate for the days requested and it didn't come up "invalid code" when I did the room search (where other codes had). So the code worked until I went to checkout and that's when it said invalid code. Did anyone ever have this happen? I'm trying to book far in advance so it will be cheaper because I know the closer it gets the more expensive it is.