I would call everyday to see if any rooms have opened up. I've been told rooms are not available and I've always seemed to obtain a reservation due to cancellations because I kept calling to check on availability. I was told once by a CM to call in the morning between 8-9am because that's when rooms are put back into the system due to non-payment of deposits on reservations (not sure if that's entirely true but I just thought I'd pass it on). Good luck!