The Square Grouper is the kind of open-sided tiki bar that defines casual Florida drinking: thatched roof, ceiling fans, cold beer, and a view of passing boats. The name is local slang for a bale of marijuana that used to wash up on beaches during the smuggling era — the Jupiter area was apparently a prime landing zone in the 1970s and 1980s. The bar leans into the history with a cheerful lack of shame. The rum drinks are strong, the fish tacos passable, and the evening light over the water is genuinely lovely.