how is the fastest way to meet lifetime platinum bonvoy membership if one has completed 8 years as Platinum Elite and 560 lifetime nights?

76% One Mile at a Time

24% God Save the Points

The quickest path is to use Marriott’s co‑branded credit cards and promotional offers to fill both the remaining night count and the two missing years of Platinum Elite status.

What’s still needed

Night requirement: 600 elite nights total → you need 40 more nights (560 + 40 = 600).
Years requirement: 10 years of Platinum Elite → you need 2 more years (8 + 2 = 10).

Fast‑track strategy

Step	How it helps	Why it works
1. Get a Marriott Bonvoy Brilliant® American Express® Card (or combine it with the Marriott Bonvoy Business® Card)	Earns 25 elite nights each year plus Platinum status for the cardholder → counts toward both the night total and the yearly Platinum requirement.	The card’s annual elite night credit counts toward the lifetime night tally, and each year you hold the card adds a year of Platinum Elite status  One Mile at a Time One Mile at a Time .
2. Add a second Marriott co‑branded card (e.g., Business® or Boundless®)	Provides an additional 15 elite nights per year. Together the two cards can give you up to 40 elite nights annually.	Combining cards lets you reach the 40‑night shortfall in a single year  One Mile at a Time God Save the Points .
3. Register for the “double nights” promotion (double nights + 1,000 bonus points per night)	Every stay you book during the promo counts as two elite nights, dramatically cutting the number of actual hotel nights you need.	The promotion doubles night credits, so you could meet the 40‑night gap with as few as 20 actual stays  God Save the Points .
4. Maintain the cards for two consecutive years	Each year you keep the cards you automatically add one more year of Platinum Elite status (the card itself grants Platinum status).	Elite status earned through credit cards counts toward the years‑required metric  One Mile at a Time One Mile at a Time .
5. Track progress	Use the Marriott Bonvoy app or website to verify that the elite night credits from cards and promotions are being applied to your lifetime total.	The system updates your lifetime night count as credits are posted  One Mile at a Time .

Putting it together

Year 1: Activate the Brilliant® Card (25 nights) + a second card (15 nights) = 40 nights → you hit the 600‑night threshold immediately. The cards also give you Year 9 of Platinum Elite.
Year 2: Keep the cards active → you add Year 10 of Platinum Elite status, completing the 10‑year requirement.

By leveraging the maximum annual elite night credits from two Marriott credit cards and the double‑nights promotion, you can satisfy both the night and year components in just two years, with the night requirement met after the first year. This is the fastest, credit‑card‑centric route to Lifetime Platinum Elite status.