Fret not op. My family goes on vacation we only eat out once or twice. Our favorite beach doesn't have a lot of great restaurants either since it's a not overdeveloped.

I'd make and freeze some slow cooker bbq chicken to eat with sandwiches. Another favorite is marinated flank steak.

Not a cook ahead but my favorite after beach meal is this http://noblepig.com/2011/05/basil-spaghetti-with-cheesy-broiled-tomatoes/ with farm stand tomatoes.

How about a meal of snacks? Make or buy some hummus and it with crudite and pita chips or bread.