If you want a little hack, the pantry does $4 sandwiches, which has to be the cheapest food option in the BVI, and they are made to order with fresh sliced deli meats and cheeses!
-Ask for it on a bun (if you get it on bread the sandwich is $7 and it is not nearly as tasty IMO)
-Pick your protein and cheese (I'm a turkey and pepper jack gentleman myself)
-Add your toppings! (they will do lettuce, tomato, red onion, pickles, jalapenos, mustard and mayonnaise)
When we are bopping around the North Sound for a day on the dingy, we order 4 of these bad boys and we are all set.