Are you going to take I-4 to Daytona? If so, there are the usual interstate highway dining options. Most exits will have fast food restaurants as well as the next step up restaurants, i.e. Chili's, Applebee's, TGI Friday's, etc.
Once you cross over the St. John's River bridge, there isn't a whole lot around. Make sure you eat before then, or wait until you get to Daytona.
Depending on when you land at MCO, you might just want to eat at the airport. There are some decent restaurants there.
Enjoy.