We planned pretty carefully so had nearly everything we needed off the dock. We did pick up some ice in Coral Harbor. The other opportunity we had was in Red Hook when we dropped one of our kids off but didn't really need anything at that point. We also picked up a few things on St. Croix but this is probably not what most people would do. If I was on St. John and needed more than a bag of chips I would likely go to the store in Cruz Bay. Seems the best choice from what I've seen.