Many folks here poo-poo the idea, but others do as we have done, too. We bring a cooler with some frozen meats and some pre-cooked, frozen meals. This can be aggregated over some time, within anyone's normal food budget. When chicken "parts" are on sale, when pork chops or pork tenderloin is on sale, bingo. It is all fair game and grillable, and when it comes to provisioning on island, you fill in the sides at that point. Make a good sized potato or pasta salad.

Over the course of a charter, there is a good chance that you'll have one " dinner time" when the weather makes it nasty to dinghy ashore for dinner and everyone is happy to have a hot meal aboard. If you have a " stash" of chili, pulled pork, or beef stew, you are way ahead of " macaroni and cheese".