we went over MLK weekend in 2010 and it wasn't bad at all. It got crowded in the afternoon but overall we were very pleased with the crowd level. And for the holiday weekend Sunday was busier than Friday or Sat.
Thanks for the info. Would we be absolutely crazy to try to do Cars Land on Sunday the 13th? Would folks suggest just holding out for Monday? My 4-year-old son is going to be BONKERS for the place when he sees it....