I'm diamond with Royal Caribbean and they match with MGM and in turn, MGM matches with Hyatt. Below is what Hyatt sent me when I tried to match Hilton Diamond to Hyatt. Thank you for contacting World of Hyatt. Unfortunately, we don't offer a tier match with other programs other than MGM Resorts' loyalty program, MGM Rewards. More information regarding this can be found here: Hyatt Hotels - MGM Rewards Partners - MGM Resorts You can still achieve elite status with World of Hyatt through your eligible nights and points credit during your travels with Hyatt. For details, please visit www.worldofhyatt.com. We hope to have the opportunity to welcome you as a guest at Hyatt soon.