Why good manners are important, especially in a restaurant

"Good manners are not a function of economic status. They are a function of home training, personal insight and consideration for others without losing one’s own sense of self-worth. They do not require a person to accept the unacceptable or to make others unhappy. They reinforce appropriate social limits and allow everyone involved a chance to make the best impression that they can in a verity of circumstances. There are times to pay attention to behaviour and in a restaurant with waiters is one of them. It is also excellent training ground for children." - Tessa E. Tea

This was part of an answer on Quora to the question "Why does the waiter rule work?" It's about how the way you treat wait or service staff shows a lot about your character.

Tessa gave an excellent writeup which I wholly agree with (and learnt a lot more from), especially this summary paragraph where she explains how the way you behave towards strangers and acquaintances, especially people who have to deal with whatever nonsense you dole out, really shows the kind of person you are.

I've not been able to put the thoughts and beliefs behind my insistence on good manners in my children into words, and I'm so thankful for this answer. 

Ok kids, come read this.