We are booked 9/37-9/30 at CSR, free dining. We have an ap and saw the codes and are thinking of adding a night 9/26 (although we won't get there until 10 pm) Will I be able to add a night using the ap code to my existing reservation? Will I have to change rooms at CSR? We would also be up for spending a night at a Value, and then switching to CSR if we really need to. I can't get a hold of anyone, the waits on the phones are really long. Thanks in advance.