RE: New Smyrna Beach, FL, Daytona Beach
It's probably too late but I live in New Smyrna Beach (and my first job 40 years ago was soda jerk at Little Drug Co) so here goes:
Visit Little's for the ambiance and cherry cokes & hamburgers. J.B.'s has become overpriced and very touristy but has great views of the river & marsh at sunset. Sea Harvest on the intracoastal at the foot of Canal Street is more of a rf kind of place - order mostly fried seafood at a counter, pick up your order when called and sit at picnic tables overlooking the water. Cheap, too.
Breakers on the ocean has some of the best hamburgers around and is a great place to watch people. Toni & Joe's, also on the ocean, has great steak hoagies - only open for lunch.
For a very nice meal, although not cheap, at a local family owned place, try the Spanish River Grill in the Indian River Plaza on the beachside. Excellent food, good wine list (no liquor), nice people - only seats about 40 and plan on spending upwards of $100 for two with a bottle of wine.
In Daytona, the best roadfood burger is at the Brickyard on International Speedway Blvd. - a great old A-frame bar atmosphere where they grill it up in front of you. Just down the street from Krispy Kreme for dessert. There are some fun atmospheric places on the intracoastal in Ponce Inlet, south of Daytona - Inlet Harbor is a big, busy, people watching place, Lighthouse Landing is small, funky, slow service but fun kind of place.