My best margarita on the rocks was at the bar at CR next to Chef Mickey's. Other than the ones I get when I go to St Thomas USVI I know most prefer the frozen but ever since I tasted one on the rocks I won't go back to the frozen ones But everyone has their own preference
We like the margarita bar in DDT! It is right by the water very close to World of Disney I think. They also have a few tables nearby so you can sit by the water; it is very relaxing.