To achieve Marriott Bonvoy Lifetime Platinum Elite status in 2026, you must meet two rigorous requirements: you need a total of 600 lifetime nights and 10 years of Platinum Elite status or higher. These years do not need to be consecutive, but you must have achieved the Platinum tier (which normally requires 50 nights in a single year) in ten separate calendar years. For many travelers, the most efficient "shortcut" to this goal involves using co-branded credit cards, like the Marriott Bonvoy Brilliant American Express, which provides instant Platinum status as a cardmember benefit. Each year you hold the card and pay the annual fee, you "bank" one year toward your 10-year requirement. Additionally, these cards often provide 25 "Elite Night Credits" annually, which helps you reach the 600-night total faster even when you aren't staying in a hotel. Once you hit these dual milestones, you are locked into Platinum benefits for life—including lounge access, late checkout, and room upgrades—regardless of how many nights you stay in the future, providing a permanent "safety net" for the loyal traveler.