When you use any American Express card to pay for a three-night stay at a participating Four Points by Sheraton hotel, you’ll only be charged for two nights. You must arrive on a Thursday through Saturday between now and Dec. 31, 2008 to qualify for the free night. Book reservations via a Starwood hotels Web site or call center and mention promotion code ZAF. Advance reservations are required and cancellations are non-refundable. Go to http://insideflyerus.wpengine.com/link/?1221 for more information.