What goes around, comes around. When your provisions aren't everything you need, substitute what you have for whatever you couldn't have. Or... get in the dinghy and go ashore for something else. Islands, you know, get provisions via airplanes and boats. You can, even now, put things in coolers and checked baggage to have some insurance.

This is a goes around/comes around topic. Most people can still have an awesome trip even without 100% provisioning fulfillment.