OHMARK--

I found that one today, also!! When I clicked the link it took me to another webpage for Marriott Rewards member specials.

Yes, indeed, it is the M11 code for Mid-Atlantic Marriotts -- from at least Pennsylvania to North Carolina, and of course, in between.

You get the standard $100 bonus bucks we are accustomed to for a 2 night stay to be used at a future Marriott or Renaissance 2 night stay.

What is interesting, however, is that you can get a $50 Bonus Buck for a 1 night stay, and although the bonus buck must be used for a future 2 night stay, it can be used at Courtyards, and other Marriott properties, not just the high tier Marriott/Renaissance hotels.