First off, understand that this is not health food.
It is greasy bar food. Fries, wings, etc. With that frame of reference, that is, as far as greasy bar food goes, it is good and consistent. I've never had food from QSL that I didn't enjoy eating. It tastes like real food (don't laugh, not all restaurant food does!), and leaves you feeling like you've eaten real food (as opposed to physically stuffed but still craving nourishment).
The service is hit or miss, and that's fine with me in a place like this. The servers tend to be genuine; if they are taking a while to come around, it's probably because they have a lot of tables to manage, not for any negative reason.
Of course, the only reason that many people go to a QSL is for some kind of car show. And I thank QSL for creating such a venue.
Keep it up, Quaker Steak!