Definitely casual. However, a bit dressier could also work. .
Casual. Very nice ambience and view. We have been eating there for yeats.
Dressy casual
At dinner I would say you may be more comfortable with dress casual. Shorts and a polo shirt and Bermuda shorts at a minimum. It does have a bar and a top deck where more casual (Think beach wear) would be appropriate. It is at a marina and you will see practically anything, but the dining room at night is really nice.
Casual to semi dressy. You will see all different. Super nice place to eat by the water, so you have people coming off the boats to eat as well as others coming off the island or mainland.
I would say smart casual! You would not be out of place in shorts and a collared shirt
Casual
Casual but collared shirts .. etc.
This is not a fancy place. You can wear anything you want
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