I was reading the fine print for the Comp nights at different MGM hotel properties. Most of them say they cannot be used with existing reservations. So does this mean I could redeem 2 comp nights at the MGM Grand, and then make my reservation for the next 2 days after? I want to stay in the hotel 4 nights. WOuld I have to move rooms and everything? Would there be a time period when I don't have somewhere to keep my belongings if I do have to move rooms?