I have a late night departure. I want to depart the hotel in the 7-8 at night time frame. my reservation is currently for four nights on an award or points. however that means that I check out the day of departure and even if I receive a 4 o'clock checkout i have to kill 3-4 hours. However since I get the fifth night free, would there be any problem with just booking the fifth free night and leaving at 7 or 8 that night?