You have until the end of this month to earn double miles with a partner airline when you book and complete a stay at participating Hilton HHonors hotels and resorts within Latin America and the Caribbean. You must select a participating airline as your preferred Double Dip Points & Miles partner in your HHonors profile to qualify for this offer. Participating airline programs include, Aerolineas Argentinas, Aeromexico, Aeroplan, American Airlines, Delta Air Lines, LAN, TAM and United Airlines. Hilton HHonors members must first register at http://www.HHonors.com/LATAMBonus prior to checkout of your first stay within the promotion period. The bonus offer will end April 30, 2014.