Members of Amtrak Guest Rewards can earn double points on your first four Amtrak trips and triple points on your fifth and more trips March 16 through May 8, 2009 on all trains in the Amtrak system. Quadruple points are being offered if you travel on National Train Day, Saturday, May 9, 2009 on any Amtrak train. You must register for the promotion at AmtrakGuestRewards.com or by calling (800) 307-5000 (option 2), using registration code 31609. Reservations for qualifying trips must be made between March 16, 2009 and May 9, 2009 for travel taken between March 16, 2009 and May 9, 2009. Trips taken during the promotion period, but reserved prior to the promotion period will not earn bonus points and there is a limit of two qualifying trips per day (one roundtrip or two one-way trips). Other restrictions may apply.