I used TP's actual crowd calendar to plug in all parks, all dates that I am interested in, and set up a calculation to show the average crowd level for particular weeks. It appears that the week prior to Thanksgiving was more crowded this year than the week after Thanksgiving (3.8 vs 3.2). In case anyone but me cares. 

We are considering going the week before the week of Thanksgiving next year.
347 days to go!