In my experience it was dependent on the car group.
But my most recent experiences, they would stop at donut shops for like an entire hour. Some ones that I know would stop at a sit down restaurant, like a Coney Island, and order a huge breakfast. In fact, since in one kh you would have at least 2 congregations, you'd find people from all three cong. in one establishment. Hm. Interestingly, there weren't that many people there, jw's included. Unless it was a co visit.