Reading a review of The Suit a guide for men on how to dress well by Nicholas Antongiavanni, brought to mind a few things that rile me in the customer service field. Maybe it is because of my european upbringing but I am not fond of hearing people adressing women as 'mam', I would rather they use the old fashioned 'ladies'. I do not care either about 'how are you guys doin'. In most cases the person approching a client and using these words is a total stranger not their best buddy. I believe sometimes old fashioned manners add a touch of polish, they reflect better on the person approaching you. It does not mean being a stiff and not being friendly by the way.

Frederica Cere Kussin highlights basic manners at AllEtiquette.com, nothing highbrow just common sense.