We were there this past January from the 24-31. In my opinion, the parks were not crowded. The only "crowds" we experienced were on MK on a Monday (one of only 2 nights for Spectro and PM EMH) and AK on a Tuesday (every tour group was there, or so it seemed). When we went to MK that Wednesday, we walked onto nearly everything! The only long wait was Peter Pan and that was at 40 min all day long. BTMRR was a 5 min wait as was Buzz all day!