To OP, please do not get offended by the passionate responses here about late check out! I'm sure you were just asking based on regular hotel experience and were unaware of the possible inpact on other members. It is just that many of us have had the annoying experience of waiting and waiting for a room that is promised long after check in time and hate to think that we have to start our vacation on such a hectic note because someone else decided that THEY wanted a lesiuirly end to their vacation and stayed past their time(and please I am NOT refering to YOU, you after all just ASKED a question about the POSSIBLITY of doing it 'legally")