Any adivise on fast food jobs?

Trim your nails and keep them clean

Short change people as your wages will be low, eat as much food as you can so you save money on groceries and any rude customers sneeze in their food

Best thing to do is just remember people do what people do and most often they do it without even realizing it.

PS don't get too stoned and go to work

Of all the fast food places I've eaten, Chick-fil-A's employees seem significantly happier than those at other places.