Reservations must be made online at westin.com, via the Starwood Hotels & Resorts App or by calling 1-800-937-8461. Offer only valid at Westin Hotels & Resorts in the US & US territories. Offer not valid for stays that are paid for before or after the promotion start and end dates. Excludes St. Regis®, The Luxury Collection® Hotels & Resorts, W® Hotels, Le Méridien®, Sheraton® Hotels & Resorts, Tribute Portfolio™, Four Points® by Sheraton, Aloft® Hotels, and Element® by Westin. Excludes Westin Well-Being and Vacation Ownership. Excludes gift card purchases. Please note that hotels, car rental companies, cruise lines do not accept prepaid cards for charges authorized in advance, although prepaid cards may be used to settle the final bill. Check to make sure prepaid cards are accepted before attempting to use your prepaid card to take advantage of offers for these merchants. Corporate Cards are not eligible for this offer. Enrollment limited. Must add offer to Card and use same Card to redeem. Only U.S.-issued American Express® Cards are eligible for this offer. Limit 1 statement credit per American Express Card across all American Express offer channels. Statement credit will appear on your billing statement within 90 days after 12/31/2015, provided that American Express receives information from the merchant about your qualifying purchase. Note that American Express may not receive information about your qualifying purchase from merchant until all items from your qualifying purchase have been provided/shipped by merchant. Statement credit may be reversed if qualifying purchase is cancelled. If American Express does not receive information that identifies your transaction as qualifying for the offer, you will not receive the statement credit. For example, your transaction will not qualify if it is not made directly with the merchant. In addition, in most cases, you will not receive the statement credit if your transaction is made with an electronic wallet or through a third party or if the merchant uses a mobile or wireless card reader to process it. By adding an offer to a Card, you agree that American Express may send you communications about the offer.