It’s a pretty revolutionary hotel alliance, not unlike airline alliances. Hyatt didn’t have a big footprint in Las Vegas. Their members can earn points and elite qualifying stays and nights, as well as redeem points at MGM’s M Life hotel properties like Bellagio, Mandalay Bay, and MGM Grand. MGM members have reciprocal benefits at Hyatt properties as well.
And the deal they struck even includes elite status recognition as well. Hyatt Diamond members get MGM’s Platinum status (even Hyatt Platinum, the level you get signing up for a Hyatt Visa, gets you MGM Gold).
The key here is that MGM members get the benefits of Hyatt when staying at Hyatt and Hyatt members get MGM’s benefits when staying at MGM. In other words, no free breakfast for Diamonds at Bellagio but they do get to skip the taxi queue.
Heels First discovers that MGM has devalued its M Life elite benefits without notice. They used to offer ‘priority’ early check-in and late check-out. That benefit is no longer listed, although presumably it’s still possible at the discretion of the hotel. (It’s hard to imagine a top tier Noir, whose status was earned via a $250,000 theoretical loss, being denied late check-out.)
Here’s the benefits, sans late check-in or even check out:
At least Golds (Hyatt Platinums who link their accounts) still get priority check-in and the possibility of an upgrade, and scrolling down to transportation benefits Platinums still get to walk straight to the front of the line and waive their elite card to take the first available taxi. Both Golds and M Life Platinums (Hyatt Diamonds) get cafe and buffet line passes..
Update: The website for matching Hyatt and M Life status is down, although it seems that Hyatt can assist via Twitter with this. (HT: Hans M.)