Separate from the upcoming summer promo, Marriott's announced a regional promo for the Middle East/Africa across Marriott/RC/SPG brands. Looks to be more discount oriented.
"All guests booking between 1st May and 31st August 2017 for stays between 21st May – 9th September 2017 can enjoy 20% off on the best available rate and a 30% off on food and soft beverages at participating restaurants, bars and lounges. However, Loyalty Program members are eligible for the additional benefits of 30% off on the best available rate and a voucher for a 30% off on their next stay, valid for stay between 10th September – 31st December 2017."
I posted about it in the Marriott forum. More details there.
http://www.flyertalk.com/forum/marri...-21-9-9-a.html