Happened to me (family) some years ago at one of the more popular "resorts" in the Delaware Water gap....our last day, with 2 hours to go before checkout...almost all packed up, having lunch at our campsite, this couple comes in out of nowhere and makes a big disturbance. Angry, walked up to the office and demanded to know why they were let in FOUR hours before check-in time...and disturbing our campsite, the office lady told me she was sorry, but they were giving HER a hard time so she let them in. Pass the buck.