Get your oysters for $2 all day everyday at Summer Shack. Head to either of the award-winning seafood meccas — Cambridge or Back Bay — and get all the briny bivalves for a steal. You can go all-in on a mountain of fresh shellfish and round it out with a Mai Tai or two (Bacardi, goslings, dry Curacao, lime juice & orgeat almond syrup), or top off your seafood feast with a legendary Shack lobster roll and some whole belly clams. Book a reservation on their website or just swing by for a walk-in table or a barstool any night of the week.