TIPS= To Improve Personal Service. You do your job, you get paid by your employer. You go out of your way to provide service to me. Make me notice or feel special... I will tip you.
SkyClub = Very seldom do they do anything to warrant a tip. Sometimes they should tip me.
It is amazing that some fast food restaurants have a tip line on their credit card receipts now. I am sure there is some fool out there who will actually put a tip on there. Who gets that?.... the owner.
Yes I agree with a poster about. Tips are out of control in the USA!