Listen, it’s not going to be like Kansas City BBQ. We simply aren’t known for that lol but I’d recommend Chester’s BBQ in Groton CT. My fiancé loves seafood and I hate it so we have this seafood issue a lot. For a quick bite, Fred Shanty’s in New London Ct down by the water. For a restaurant with seafood and Non seafood options: anywhere in mystic CT!!! Including our faves: red 36 and S &P Oyster bar. Also, on the waterfront in new london CT. Definitely check out mystic while you’re hear! Sounds like you’ve seen a lot of Rhode Island and mass! What a fun trip! Enjoy!