Marquis = 10% rebate in shops
Marriott Marquis rules say: "When you present your Club Marquis membership card, you'll receive a 10 percent discount at participating Marriott-owned and -operated gift shops."
Not to often, but sometimes I buy at the shop small things like stationary, a local map or book, a daily paper, chewing gum.
Do you (shall I) present my Marquis card then and ask for the 10%?