Stay at one of nine participating Marriott resorts in the Caribbean and Mexico this summer and enjoy a free night, daily breakfast for two and $100 resort credit per stay. The Sand Dollars package is only open to Marriott Rewards members for stays between June 5 and Sept. 5, 2009. Participating resorts include Frenchman’s Reef & Morning Star Marriott Beach Resort in St. Thomas, Virgin Islands; CasaMagna Marriott Puerto Vallarta Resort & Spa; Grand Cayman Marriott Beach Resort and Renaissance Aruba Resort & Casino. Free night and minimum night stay requirements vary by resort. In general, members are required to stay a minimum of four nights and receive the fourth night free. Use promo code M11 when making reservations.