Offer valid for qualifying reservations between 2/29/16 and 4/30/16. Includes spend for booking directly via ncl.com, phone, or through travel agents. Excludes purchases onboard, Norwegian gift cards, shore excursions and transportation to and from the ship. Excludes RCL, Sixthman, and Kloster. Valid only on US website. Check to make sure prepaid cards are accepted before attempting to use your American Express Serve® or Bluebird® Card to take advantage of this offer. 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. Enrollment limited. Must add offer to Card and use same Card to redeem. Only US-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 4/30/2016, provided that American Express receives information from the merchant about your qualifying purchase.