South of Titusville (Kennedy Space Cntr), you can find a couple of beaches/campgrounds. Sebastian Beach is fun and has a campground too that sits on a island between the river and ocean. Also, Longpoint campground, is just south of Sebastian, and is small but you can rent kyacks, etc. Both are very reasonable to get into.
Also, if you go thru West Palm Beach is Lion Country Safari with a wonderful KOA on the property. We were there just last week and had a wonderful time, especially listening to the lions roar in the morning! The campground was wonderful, very clean, with dog park and heated pool.
Call them because they have some great specials going. We got 3 nights and 2 tickets (one for each day) to the Park for $125, soooo worth it!
On your way from Kennedy going south, stop by Port Canaveral and have lunch or dinner at Grills in Port Canaveral by all the Cruise Ships...good food, lots to watch!
Enjoy your trip, BUT bring clothes for all types of weather...welll, maybe not snow!