Well, today I received a large bang to the back of my head by the waitress's tray. ouch. And afterwards, not even a free coffee. Indeed she even seemed annoyed by me.
The archetypal waitress is smiling, polite and friendly, but this discounts their low wages, physical exertian, and dealing with customers of all sorts. Raise the wages, reduce the working hours, and boom - nice friendly service.
Until then, lazy Sundays in cafes with the newspapers will never seem safe.