Forgive me if this question has been asked, but we have 2 rewards for the $50 dining credit at Monte Carlo. This reward requires a 1 night stay at any MGM property. We are arriving in Vegas on 11/14 staying at the Golden Nugget for 3 nights. We then have a reservation on the 11/17 at MC and have a reservation #. Are we able to use one or both of these $50 rewards before the 17th, or are they only valid on the date or during your stay at the MGM property? Will the rewards desk just record the reservation #?