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Starwood: Between May 1 and July 31, receive a free night at participating resorts for every three stays at Starwood hotels. These free night awards can be redeemed from May 6 and December 21. Awards can be used any night of the week with no blackout dates. There is no earning limit for the free nights during the promotion period. Click here to register – must register by June 30, 2011
Marriott: Earn between June 1 and August 31. You will need to sign into your account to see the offer you received. Typically you can call Marriott (especially if you have status) and ask to switch to another promotion. Click here to sign into your Marriott account and register. Must register by June 30, 2011.
Also, starting tomorrow Hiltons promotion changes from 1,000 points per night to double points or miles, while Hyatt’s promotion is over and a new one has not yet been announced.