Total Rewards/Wyndham are giving Diamond status to all MLife Gold/Hyatt Explorist members
To match, you must go to a Total Rewards desk in person (at any casino under the CET umbrella) with your MLife Gold card and they will give you the status.
Benefits of TR Diamond status are pretty extensive, including 4 nights free at Atlantis in the Bahamas, a $100 dining voucher, 2 free show tickets per calendar month in Vegas, free parking, and no resort fees. For more details, see my previous post here.
Once you have TR Diamond, matching to Wyndham Rewards Diamond is an online form here that takes a few days to process. Once you are in the loop, you can "flip-flop" your status between TR and Wyndham. That is, when one expires, the other does not for another few months so you can match to the expired one, and back when the unexpired one expires.