Scrub Island is a must stop everytime we visit. Several dining options and the store there will have most basic items you may need. Just don't expect too much. Good selection of drinks, some shelf stable items and even deli meats and bread. Check the price difference for water vs marina cay as it may save you some dollars. I agree above that just have them take the ferry as you will not need to meet them at trellis bay unless you want to go and do your grocery shopping there. I believe the back side of Scrub Island is now open and should not be missed. Most cats and monos usually back in at Scrub but there are several spots that you would able to pull in bow first but these fill up quick. Keep in mind that Scrub is usual stop for the several sailing schools which take multiple spots so I would make my reservation ahead of time if you want to make sure you get a spot although we always just wing it. Plan on spending a full day there. Showers are the best in BVI ashore.