Had a late lunch party of about 17 people, a party for my daughter. I didn't pay for everyone, was about 6 checks. But we had the cool inside the kitchen table at a PF Chang. When it was all over, I know the kid serving us worked his a$$ off, best service I've seen for such a large table of people. Anyway, I put 18% on the CC for the bill but also handed him $20 cash for going that extra mile the entire time. I know he'd have to share the one on the tab with the bartender and the bus staff, but that $20 he got to keep without saying anything.