groceries Shop with Us... Rock's Supermarket! Rent one of our golf carts, load it with groceries from our supermarket and save 5% OFF the groceries. Rock’s Shopping Center offer all the essentials you need. Juices, Sodas, Rum, Cigarettes, Chips, Frozen Goods, Toiletries, and much more.Bring this flyer or show us on your smartphone and get 5% OFF groceries.