Mods, please move if I've duplicated an existing thread:

(I did search for "double")

Get Rewards in the express lane.

Earn Double Elite Night Credits for every paid stay, worldwide.

See Details

Here’s how to boost your status:
Register* by September 30, 2016
Stay at participating properties between June 06, 2016 and December 31, 2016
Earn Double Elite Night Credits on every night for each paid stay** worldwide

Elite Night Credits are your path to Elite status – the more you have, the higher your status level.

Remember to include your Rewards number and book direct on Marriott.com.

*Offer valid only for Marriott Rewards members residing outside of the U.S. See Terms & Conditions.

** A “stay” is defined as consecutive nights spent at the same hotel, regardless of check-in/checkout activity.

Late checkout, exclusive offers, extra points and more Elite benefits– get there twice as fast at 4,000+ hotels worldwide.

https://www.marriott.com/rewards/pro...promotion=IN16