We have two boy's (2.5 years old and 2 months old) and we took our first Disney trip in early December. We went to Anaheim and did a day each at DL and DCA. We absolutely loved it and can't wait to return for more Disney magic! My in-laws live in Florida so my wife is trying to convince me to make the next trip to Orlando so her parents can meet us there. We are shooting for early November. My older son is a huge Cars fan and loved Cars Land, we literally spent half a day in Cars Land and he wasn't even tall enough to ride RSR! This time he would be tall enough for RSR which would only make SoCal Disney that much better.
Removing the Cars element could possibly result in some disappointment for the little guy. Are there any Cars attractions at WDW? Test track looks like its not Cars related. Or is WDW so awesome that he won't even mind? He is into most of the Pixar stuff, Cars just happens to be his absolute fav.