My in-laws are visiting from France, and are driving from Boston to New York, with a stay in Rehoboth, MA along the way. They love seafood, and might dip into Cape Cod, especially if there's a great meal along the way.
This thread looked really helpful
But is (scarily) more than a decade old, so I have no idea if those places are still good options.
They're doing this this weekend, which I also assume is off-season for a lot of places. Any suggestions for must-hit seafood places along the way would be very welcome!