Marriott Rewards members can earn 2,000 bonus miles with every stay, starting with your second stay, from Jan. 1 through April 30, 2012, up to 50,000 bonus miles in the recurring MegaMiles promotion. Members will also earn their usual base miles with every stay at any of over 3,500 participating hotels in 70 countries.

Participating frequent flyer program airlines include: Aeromexico, Air Canada, Air China, Alitalia, Asiana Airlines, Avianca-TACA, British Airways, Cathay Pacific, China Eastern, China Southern, Delta, Emirates, Frontier Airlines, Hawaiian Airlines, Japan Airlines, Jet Airways, JetBlue, Kingfisher Airlines, KLM/Air France, Lufthansa, Southwest Airlines, TAP, United, US Airways and Virgin Atlantic Airways. Enrollment in the Marriott Rewards program and registration for the promotion are required. Members can register for the promotion any time between now and April 30, 2012. Miles are earned based on qualifying charges that are charged to the hotel room: room rate, meals, beverages, phone calls, movies, purchases at a Marriott-operated gift shop. Non-qualifying charges are: taxes, paid outs, gift certificate redemption/gift card purchases, banquet, catering and group charges.

You can choose to stay at the following Marriott brands: JW Marriott, EDITION, Autograph Collection, Renaissance Hotels, AC Hotels by Marriott, Marriott Hotels & Resorts, Courtyard by Marriott, Fairfield Inn & Suites by Marriott, SpringHill Suites by Marriott, Residence Inn by Marriott, TownePlace Suites by Marriott and Marriott Vacation Club. Stays at The Ritz-Carlton will also count toward this promotion.

Allow four to six weeks after promotion ends for miles to be posted to your airline program account. Visit http://MarriottRewards.com/MegaMiles

Bottom line: This is a popular recurring promotion for Marriott and sometimes targeted members receive differing offers. Don’t forget to change your earning preference to the frequent flyer program of your choice before trying for your 50,000 bonus miles.