Casual environment, jeans are just fine
It would be ok, but only ok.
I would at least upgrade to chinos.
No thats fine, dress for whatever occasion you are going out for.
It would be okay, but a little bit dressier would be better.
I've gone like that before and didn't seem to be out of the norm.
You can dine casual here so jeans and a polo are fine
Jeans are fine. It is a nicer restaurant than your normal chain restaurant.
It would be fine
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