Tourist areas, those buses tend to prefer larger sit-down restaurants, buffets. I know of some places that will put on their website, advertising, that they can seat X amount of people tour buses welcome.
Not to say that chick-Fil-A does not get it's share of tourists, but, their pain-in-the-ass drive-thru congestion is due to locals. I avoid a certain area of a shopping center due to the drive-thru lane blocking traffic, as dumbasses will block the thru-lane. That's one of the few things that pisses me off about Chick-Fil-A. That, and when the founder washed black people feet, because of racisms and shit.