Take off on your next flight award faster with Hilton HHonorsTM and American Airlines. Register for this offer to earn double American Airlines AAdvantage® miles when you book and complete a stay by March 31, 2012 at participating hotels and resorts within the Hilton Worldwide portfolio. Be sure to select American Airlines as your preferred Double Dip® Points & MilesTM Partner in your HHonors profile to qualify for this offer. LINK TO REGISTER. LINK TO PARTICIPATING PROPERTIES. Terms and Conditions: *To be eligible for this offer, you must (1) select American Airlines as your preferred Double Dip® Points & Miles™ Partner in your Hilton HHonors™ account profile, (2) complete a stay at a participating hotel or resortin the Hilton Worldwide portfolio from January 2, 2012 through March 31, 2012, and (3) register online at www.HHonors.com/doubleaadvantage prior to check-out. You must be a Hilton HHonors member to earn points and miles for hotel stays. AAdvantage Bonus Mileage (Both Fixed and Variable Miles members): Earn double AAdvantage bonus miles per qualifying stay at a participating hotel or resort in the Hilton Worldwide portfolio. There is no cap on the AAdvantage miles that may be earned during the promotion period. Allow up to eight weeks after qualification, and after promotion has ended, for AAdvantage bonus miles to be posted to your AAdvantage account. AAdvantage program rules apply, for complete details about the AAdvantage program, visit www.aa.com/aadvantage. Hilton HHonors membership, earning of Points & Miles and redemption of points are subject to HHonors Terms and Conditions. American Airlines reserves the right to change the AAdvantage program and its terms and conditions at any time without notice, and to end the AAdvantage program with six months notice. Any such changes may affect your ability to use the awards or mileage credits that you have accumulated. Unless specified, AAdvantage miles earned through this promotion/offer do not count toward elite-status qualification or Million Miler™ status. American Airlines is not responsible for products or services offered by other participating companies. For complete details about the AAdvantage program, visit www.aa.com/aadvantage. AmericanAirlines, AAdvantage, AAdvantage with Scissor Eagle design and Million Miler are marks of American Airlines, Inc.