The manners listed are basic expectations of adults and children alike in public places, and restaurants especially. No disagreement there. Who would argue with this? Noone believes a person should run around, use loud obnoxious voices etc etc.
The question is-getting your children to adhere to these guidelines. My children for eg, behave very well at the table at home. But in a restaurant, there are no guarantees. I contend this is less an issue of discipline, or lack of consideration for others on the part of the parent, than differences in temperment on the part of the child. Good for you (and lucky for you) that you have children who readily behave well in a restaurant. if you have more than one child, who together with their sibling/s, behaves well in a restaurant, then a gold star is what you deserve. My kids are not especially interested in crayons. But if the food is served quickly, they behave very well whilst eating.
My childrens behavior (they behave well on their own but not always when they are together) is not something i can predict, despite the guidelines i lay down for them. For this reason, we are less likely to dine in restaurants, and as a consequence, they get less experience.
However, i am sure that with a bit of maturity, things will improve.
I suppose we all just need to be considerate of each other, and tolerant when things arent perfect. That goes for other customers in the restaurant when it comes to a crying child (or whatever the situation may be-if my child cries, i take him out, but they still hear it), as well as parents with children. A bit of give and take i say.
When it comes to extremely expensive restaurants...a person who can afford that, can either afford a babysitter, or someone to come along who can effectively keep children entertained to ensure they are quiet and seated. One reason i go to a restaurant is so i can relax. getting anxious because of my childs behavior is not relaxing. Sometimes though, it might be to hot or too cold outside to take out, so we are forced to stay in or starve (depends on the situation)
I wouldnt spend 250 bux on a meal even if i could afford it, although i have been invited many a time to these types of establishments before i had children.