This year, we were there the first week of Feb. (Jan. 30 - Feb. 6 to be exact). There were no crowds. We even did MK on a Sat. It was crowded, but not bad. Matter of fact Peter Pans flight (at MK) was the only time in our whole trip, that we used fast pass. We got a FP because Peter Pan had a 20 min. wait and we weren't used to waiting in line. Our FP was for a hour later and we did Space Mt., the raceway (I forget the name), snow white and got Ice cream and still were back at Peter Pan before our Fast pass time. The rest of the parks were empty, no waiting for any shows, TOT, RNR, nothing. The only draw back is that Spectromagic is only on Sat. night.
Our weather was great. The evening we were at MK, it was pretty chilly, we got hot chocolate while waiting for spectromagic. That day we had shorts and sweatshirts on. That was the coldest it was. DS went swimming every evening. After going in Feb. we decided to make all of our trips in the winter.