We have an out of town guest coming who loves the ocean, and would be thrilled to go out somewhere for dinner on/near the beach, even if it's no longer beachy season. 2/4 of the folks dining (including out of town guest) are ovo-lacto vegetarian, 1 vegan, so seafood isn't really what we're looking for. Everyone is adventurous/chowish.
We will have a car, so T-access not an issue.
(The most likely option will be that we'll separate the beach-going and the eating our way around Boston parts of the day, but I thought I'd see if anyone had any recs I hadn't thought of.)