To achieve Marriott Bonvoy Lifetime Platinum Elite status in 2026, you must meet two specific cumulative requirements over the course of your membership: a total of 600 qualifying nights and 10 years of Platinum Elite status or higher. Qualifying nights include those earned through paid stays, award stays, and elite night credits provided by co-branded Marriott Bonvoy credit cards. The ten years of status do not need to be consecutive; any year in which you held Platinum, Titanium, or Ambassador status counts toward the decade requirement. Once achieved, Lifetime Platinum status ensures you never drop below the Platinum tier, regardless of your future annual stay activity. This status is highly coveted because it provides "guaranteed" benefits for life, such as 4:00 PM late checkout, room upgrades (including select suites), and access to hotel lounges or complimentary breakfast at participating brands. You can track your progress toward these lifetime milestones through the "Lifetime Status" section of your account on the Marriott Bonvoy app or website.