Originally Posted by arlflyer

Hotels can very easily track access to rooms, since the door keys are electronic, and the usage is logged. When properties say that they are waiting X hours since the guest left before entering a room, this is how they can make that determination. So if a hotel actually cared to call this bluff, they could. I agree with previous posters that, these days, properties would likely just rather have the room revenue and would not care. Now, I don't necessarily agree with OP that this is a scheme worth pursuing - that's attributing a pretty high future value to Diamond in a very uncertain climate.