Yes
Absolutely
It's basically come as you are, will see all different types of dress people here
Yep. Definitely. Not a pretentious place. You won't feel overdressed with a suit, but if you were in the area and could walk in, jeans and a nice shirt would be fine. The staff is nice and will not look down on you. Though you will be among the more casual. You would probably feel safer if you were at least business casual, but I'm sure the staff would welcome you regardless.
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