https://www.spgpromos.com/takethree/?language=en_usPreferred Guest Take Three
Earn Triple Starpoints for stays that include a weekend, or double Starpoints for weekday stays at participating hotels
Stay two or more nights at participating SPG hotels and resorts between May 27 and September 4, 2017
http://ritzcarltonrewards.netlinkrg.com/doublepointssummer17/en/default.aspx?m=1Earn double Ritz-Carlton Rewards points
for every stay of two nights or longer at The Ritz-Carlton hotels and resorts between May 27, 2017 and September 4, 2017.
http://www.marriott.com/rewards/promotion.mi?promotion=SC17Earn Up to 4,000 Marriott Rewards bonus points per stay
Register by August 30, 2017
Stay at participating hotels and resorts worldwide between May 27 and September 4, 2017
Earn 2,000 bonus points per stay beginning with your second stay.
Earn an additional 2,000 bonus points for each new brand you stay with, beginning with your second brand.