Chatted with an agent online:
Erin H: Marriott Rewards does not generally offer status matches or the opportunity to bypass the normal requirements of achieving our Elite membership levels. As a courtesy based on your current Elite level and stay history with Marriott Rewards, I'm happy to offer you a Silver Elite Status challenge.
Erin H: In order to achieve this status, you must accumulate three separate paid stays from the date your account is registered for the offer through August 31, 2018. Please note that this is a one-time offer.
Erin H: A stay is all consecutive nights you personally stay at a participating hotel.
Me: I understand.
Erin H: Once you have accumulated three separate paid stays, your account status would be upgraded to Silver Elite through February, 2020. To retain this status for all of 2020, you would need to accrue the qualifying number of Elite nights during 2019. Would you like to accept this offer?
Erin H: I have now registered your account for the Silver Elite Status Challenge. This registration is pending and will begin tracking your progress beginning with your next stay. Should you be unable to accumulate three separate paid stays during this trial period, your account would remain at your current status, and you would need to stay the normal night requirements to achieve this Silver Elite level.