I ain’t George, but…
My concern would be with the flow of traffic. If you’re going to go the QSR route, you might want a cattle herder wall that goes around the right side. Otherwise, you’ve got some dead space on the right hand side of your drawing from the door to the counter. No one is going to want to sit there as all of the people coming in (and most going out) will walk right by them. I’d also suggest some sort of privacy wall to block off the entrances to the restrooms from the seating area. No one wants to look at the john while eating. Unfortunately, such a wall would cut into valuable seating area.