I was pleasantly surprised when we stopped at the Taco Tico in Tulsa, OK. I didn't expect much, not having had much positive experiences with fast food lately. The first thing I noticed that the restaurant was very clean. The next positive experience was the pleasantness of the staff. They patiently explained what the various menus included and didn't have any problem with my son who was specific in what he did and didn't want on his Tostada. The food was good and the prices very reasonable.
While we were eating, several more people walked in. We heard the manager tell his staff member "That can wait, customers come first". I wish more restaurants lived by that code.