Or you can present your MGM Rewards card at the front desk at the beginning of your stay. To do so, book direct through the MGM Resorts website or call center and provide your MGM Rewards account number at the time of booking. Member’s MGM Rewards account number must be added to the hotel reservation to earn points and Tier Credits for eligible spend charged to the member’s hotel folio. Hotel: To earn Tier Credits on eligible charges at participating outlets as a registered hotel guest, charges can be charged to the member’s hotel folio.Earn Tier Credits on Hotel, Food & Beverage, and More