Week-end warrior here, with 3 one week trips a year.
When camping, it's almost always fixed at the camper. If on the road, no problems stopping somewhere. Our style of restaurant is Cracker Barrel. Occasionally we'll swing into a Mom & Pop if we come across one. But mostly, it's just sandwhiches and Little Debbies on the road.
We eat out at a variety of restaurants when not camping. Texas Roadhouse style is about the highest level we hit though, and we stay away from McDonald's completely. So when camping, we have the time to actually prepare our own meals, and time for clean up and really enjoy it.