The Cosmopolitan of Las Vegas is officially owned and operated by MGM Resorts International, having fully transitioned its operations and loyalty program in late 2024 and early 2025. This means that the "Identity" rewards program has been retired and replaced by MGM Rewards. However, the resort maintains a unique "strategic partnership" with Marriott International as part of the MGM Collection with Marriott Bonvoy. This allows Marriott Bonvoy members to earn and redeem points for stays at The Cosmopolitan and receive elite night credits, similar to how they would at other Marriott properties. While you can book the hotel through Marriott's website and use Bonvoy perks, the physical property, its casino, and its staff are all part of the MGM Resorts portfolio. This dual-loyalty integration makes it one of the most flexible resorts on the Las Vegas Strip, as guests can choose to leverage their status in either the MGM or Marriott ecosystems depending on which rewards they value most for their particular trip.