Anywhere from business casual to fancy dress is acceptable for dinner at The Refectory.
I went in khakis and a button down but some people were wearing jackets too. I didn't feel underdressed at all but you could be a bit fancier if you wanted.
Agree with other reviewers. Nice shirt and slacks; no jeans. Maybe a jacket if you like. Relax and enjoy the food.
The fancier the better. At least business casual.
Business professional or fancy for dinner. Business casual for a bistro lunch.
Business casual to fancy is good. Enjoy!
I would dress nicely. Open collar for men.
You can dress up or casual clothes too.
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