You know, depending, disneyWorld or Land can be fun at least once in your life even if you don't have kids. we were at the one in Fla about 5 or 6 yrs ago and were talking to others in line and the place was just filled with folks from the UK who said due to the dollar/pound ratio it was dirt cheap for them!
If you go to either Fla or Ca they are worth a day or 2.
BTW, we've also had a pretty good luck at getting cheap motel rates in the winter in Va Beach, Va, and some of the NC/SC beach front resorts as it's considered too cold here for that time of year.