Casual is fine.
No minimum dress code. I wore shorts and a t-shirt. But, next time I would go with pants (slacks), to match the atmosphere.
We ate the bar and it was very casual. In the dining room people were dressed in a range from causal to dress clothes. Probably would not wear shorts in the dining room.
It tends to be dressy but not formal. But the bar in particular can be very casual
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