I have 5 nights booked and want to add Friday night but I can't until the 7 month window. I have found really good airfare but I'm afraid to book on the chance that I can't get Friday night. Since it is a higher points night, should it be okay? I also plan on booking Saturday night on cash, which I am guessing shouldn't be a problem (PLEASE tell me if I am wrong here)... any advise would be appreciated.