Good Food, Good Friends, Great Times on Bass River Marina. The Summer Shanty is the Cape's coolest waterfront bar and restaurant. This casual eatery is open seasonally for lunch and dinner. Their menu features littlenecks and oysters, Dan's crazy lobster rolls, steamers, scallops, salmon, swordfish, clam chowder, Dennis Public Market burgers & more! Offering live entertainment Friday and Saturdays from 4 to 11 pm. Take out & boat service is available.