Hi,
We were at the Poly from 11/10-11/17. The only big crowds were at MK on Thurs, 11/11. Probably due to Extra Magic Hour and the holiday. Other than that, crowds at Epcot, MGM and AK were very light (we stayed at the hotel pool on Saturday for a break and to avoid crowds). The previous poster was correct about the weather too, clear and warm with only a couple of showers in the evening.
We are very spoiled since we have been to Disney only in November, and have never experienced the really big crowds at other times. We are used to walking on the big rides and attractions sometimes a few times in a row! Much to my 2 ds delight!