Here's my situation: I'm going to Vegas on a comp in a few months from a Thursday-Sunday. Because my flight out of Vegas is at 5 pm on a Sunday, I decided to make my check out date be MONDAY instead. After all, it's comped, so the tab is still $0.00 with resort fees waived by CET. This way, I can stay in the room until like 2:30 pm when I want to head to the airport, rather than being forced to check out on Sunday by noon or 1:00 pm (with late check out, if it's even available). Have others done this? I mean, I don't literally HAVE to be there on Monday to check out, right? They'll just figure I had an early flight and bailed...correct? In the end, I kind of don't think you even have to check out formally, especially if you're not contesting charges/don't want to charge anything to your room, which leaves you with a $0 tab anyway.