2018 was actually the final year Marriott offered Platinum Premier for life, and certain SPG members were grandfathered in. According to the chain:
"Members who reach 750 nights and 10 years at Platinum by December 31, 2018, will be grandfathered into Lifetime Platinum Premier Elite status (notified January 2019). In addition, members that achieve Marriott Rewards Lifetime Platinum under the legacy requirements by year end will also be grandfathered into Lifetime Platinum Premier Elite status. And don’t forget that we’ll combine Lifetime activity across both Rewards and SPG toward qualification when members combine accounts. Beginning in 2019, qualification into Lifetime Platinum Premier Elite status will not be available."
Marriott has confirmed that eligible accounts have now been upgraded — if you see Lifetime Platinum Premier Elite reflected in your profile online or via the SPG or Marriott Rewards apps, you should be good to go with Lifetime Bonvoy Titanium once that launches next month.
I, for one, made an extra push at the end of 2018 to hit that 750-night requirement, finishing the year with 755 (my stats below reflect the six nights I've stayed so far this year).
Lifetime Platinum Premier members are eligible for standard Platinum benefits, including suite upgrades, complimentary enhanced Wi-Fi, breakfast at many hotels and lounge access. Additionally, members earn a 75% points bonus and are eligible for Marriott's "48-Hour Guaranteed Availability" program, allowing them to always book a paid room at most sold out hotels, except over blackout periods, such as during "special events."
