We always used to stop at the Welcome Centre on the way down... our two main "other" destinations on the road in Florida were Ocala, and the Florida Visitor's Centre for orange juice!
A billion dopplers? Well, I'd put 'em wherever I could... those would be really accurate forecasts.
I'd make a theme park (duh), but very nice landscaping... like Alton Towers, only with no building height restrictions