I think it's a good time to go. We went this last November over vets weekend and it wasn't that bad. We went Friday thru Tuesday and it loved it. Maybe it was that it was somewhat chilly and rained a little on Saturday/Sunday, but none of those days was nearly as busy as this last Saturday we were there, the 25th. We caught the beginning of the official holiday start which was great. Given the right weather, it could be pretty busy that weekend because of the holiday like 3minnies said. Then again, we also stayed on site and got most of Fantasyland and Tomorrowland done in our magic mornings and used Fastpass for the other rides when we could.