I didn't mean anything negative towards marathon runners, just pointing out that the crowd levels from the first of the year to maybe the 3rd and then around marathon weekend are the 'busier' times in that week I pointed out. As soon as New Years is over, the crowds drop and you can see a little bump again for the marathon.
Also, forgot to mention it earlier, Christmas decorations were up till the 6th in the 2009 trip and stayed up throughout our 2010 trip. But, the really cool thing about it - if they are taking them down while you are there, it is all done over night and is really amazing to think about all the work that happened the night before. Main street is all decked out with the tree one night and the next morning it is all gone with no signs of it anywhere. The do one park a night until they are all down (at least that is what they did in 2009).