I'll tell you what. The local Mc Rons is very nice, my order is never messed up, my change is correct, and the kids are pleasant and attentive. So results of the survey may be different from place to place.
If I want a mess from begining to end I will find a Burger King. For over 25 years I have been able to depend on that chain to rub me wrong every visit. They are going to some extreame efforts lately, might work.
I have lived in three states, I am a regional truck driver throughout the mid and upper mid west. I visit lots of fast food joints, heck I deliver to a few. The local personnel have more to do with a store than any one other factor.