The Amtrak Guest Rewards Great Escape is back. Register for the promotion and then take three qualifying roundtrips on Acela from Jan. 4 through Feb. 29, 2012, and you’ll get one free roundtrip for travel from July 4 through Aug. 30, 2012. Registration required at http://insideflyerus.wpengine.com/link/?5662 – Be sure to read the fine print as to which Acela trips qualify for the promotion.