One of my favorite fast-food joints when I visited the states was Checkers. It was only walk-through and looked horrible to work in (Shed-sized building but one kitchen), but I liked the concept. It was easy to wander up, order food, chill, then maybe wander off somewhere else.
Without any cars to access or even reliably park (??), it was relaxing. A small slice of walker’s paradise where all of the scenery catered to our eyes instead of condensed seating areas surrounded by idling cars.