Yes!! We did in 2006, and will never do it again. It was I think a 4 or 5 at the time and recommended, we went on a Saturday and it was packed to the gills. We are here right now and just had this discussion yesterday morning when we were deciding what to do for the day. We decided to go resort hopping yesterday instead, even though MK was the recommended park.
I can say though, most other days/parks, the crowd level indicator was accurate. Saturday was the only day we had trouble with in the past. We will probably go Monday and take our chances.
That's what I was thinking too. We decided to go with AK on that Saturday and save MK for another day (Other than Saturday)
I am a diehard UG fan but I'm not going to take on MK on a Saturday even if it is the "slower" part of the year....