We knew we were going at their highest attendance times. We were there from Dec 20-Dec 29. There was a huge difference in crowds before Christmas day and after - even with the weekend before. We stayed off property this time at the Thousand Trails park in Clermont and only did Disney for 2 days. The others were a day at Seaworld, 2 days at Universal and "camp" days. We did it for the experience of having Christmas day while camping and to minimize days off of school/slow time at work.
We enjoy Disney - we've been there quite a few times in the last 3 or 4 years and swice in 2012, I think. In fact, I came away from this trip saying that I was pretty Disney'd out!
We'll see what next year brings, though...