I've seen diners there for lunch in t-shirts and shorts, so I don't think there is a dress code.
Yes nice place but in beach area so nice casual.
It is fine dining, but with so much beach traffic, you often see casually dressed people.
Dress business casual or better. Jacket and tie at dinner not out of place ... t-shirt would be.
Most people we saw were in business casual or better. Usually better.
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