I'm not sure that how other people are dressed would affect my experience at an upscale restaurant?
I honestly don't mean to argue, I'm just trying to understand. So if you're getting good service at the CG, good food, and the other people are sitting there in their torn jeans having a pleasant meal, not bothering anyone, that would make you feel like you're at McDonalds? I guess its just a matter of opinion on what would bother some and not others.
The reality is that people's behavior
is influenced by how they dress. I saw it very clearly when I taught Sunday school...the days I wore my Sunday suit with matching hat, the tone in the class was much more respectful than on a day I would dress more casually...the children responded to the tone set by my dress. The cues I set, and the perception of how serious I was taking the lesson rubbed off. In court, the persons who appear for the their role [attorney/witness/defendant] dressed as though court was an event worthy of the time and effort to polish up a bit inevitably behave more politely, talk more softly, sit without putting their feet on the furniture, etc. By the same token, the ones who show up like its a day at the beach [assuming they have slid in past the bailiff] tend to talk in court, sprawl across seats, answer the judge with a "yea", etc. Is it cause and effect, or simply a function that someone with no clue how to behave isn't going to know how to dress...can't say. Except that the same defendant will behave very differently when they are in jail garb than when they have bailed out and have their shirt and tie on.
Based on the foregoing, I believe the "atmosphere" created will have an effect on the overall experience, and that there are so many places that have no burden placed on the person who just wants to show up in flip-flops and eat, but there absolutely should be experiences for fine dining in a refined atmosphere for people who so choose. Interestingly, those experiences are almost inevitably the most expensive places....so particularly is a person is willing to shell out the extra $$ for the experience, they should be able to have it in peace.