I've got a stay at the BA Marriott Plaza over New Year's (12/30-1/2). The bill will obviously close in 2011 but 2 of my elite nights will be in 2010. Will these count towards my 2010 elite status?

My Marriott Premier card anniversary is at the end of November. Last year when I signed up, the 15 elite nights dropped into my account in December and they counted for my 2009 elite status. Any reason to believe that it will happen differently this year?

The reason I ask is that I've got 67 elite nights currently with another 4-5 nights coming in from Marriott CC spending plus MAYBE 2 or 3 more with Xmas spending and travel.

Thanks for your help.
- ejh25