Slowly, I don't know what it is. But some sage advice, in veiled humor, provided a few posts back still stands. The only way you may be able to tell about this rate is to call Marriott reservations and ask them. While others can say they have used this rate and front desk people have not asked for ID, doesn't mean they won't for you. I would plan on the contingency of having to possibly pay the rack rate should they ask fro an ID.