Kennedy Space Center is not as near as you think. I would say it's at least 3 hours from Jacksonville, but if you can get there it's well worth the visit. Disney and others are a good 5 hours from Jacksonville. Florida is a big place! I think it's similar in size to the UK. As everyone knows, the USA is the main consumer of fast foods. We used to eat at Sizzlers, but they are dwindling due to the package holidays offered by Disney, and it was Orlando. There is also the Ponderosa diners. They are quite good. Some of these places allow to eat as much as you like for a set price. You will see lots of places that you already know, such as MacDonalds, KFC, Pizza Hut, BurgerKing etc. I was disappointed with Dunkin' Donuts. I thought it was really poor quality.