Marriott Hotels and Visa are offering a “buy two nights, get one night free” promotion for travel this fall.  Travelers must register to be a Marriott Rewards member (if you aren’t already) by October 31, 2011. To get the free night(s), you must stay at one of the more than 3400 participating hotels around the globe between September 15, 2011 and January 15, 2012 and pay for the hotel stay with your Visa card. The free night will be credited to your Marriott Rewards account within three to five business days after you check out. There is a maximum of two free nights per Marriott Rewards account, and you can use the free nights between September 15, 2011 and May 31, 2012. For more information on this promotion, follow this link.

In addition to the Marriott Hotel brand, participating Marriott brands include Residence Inns, Springhill Suites, Renaissance Hotels, Fairfield Inns and Townplace Suites.

Marriott Rewards members also earn free rooms, room upgrades and free and discounted hotel amenities like restaurant meals and spa services.