and let me tell you I would absolutely, without a doubt pick Thanksgiving. President's week is INSANE crowded. Worse than I've ever experienced even during July 4th. I think the entire Northeastern part of the country was there because schools were out for "winter break." I had never heard of such a thing. One day we sat at the Concourse Steakhouse for breakfast and watched the monorails go by and every last one of them was standing room only with people pressed up against the glass.
We've gone during Thanksgiving 3x and LOVED it. It's really not that crowded, I would call it moderate crowds. The decorations are up by Thanksgiving day at the latest...and if you haven't seen WDW decorated for the Holidays, you're missing someting.
PamNC