There are plenty of good liquer stores on the island. Tequial and Vodka are at a higher price because they are not local and there is more duty. Vodka being worse than tequilla. So if you can bring from duty free in airport. Clamato juice is a little harder to find, currently island super market has some, but there is always tomato juice for bloody marys. I also love ceasers (bloody mary made with clam) but find they are too heavy down here, rum punch and panty rippers are now a new fav drink.Rum is the best priced drinks here I do suggest trying the rum, personal fav. is One Barrel.
Hope you enjoy your visit