It's been a while, but when we chartered in Croatia (with a captain, but no hostess; round trip out of Split), we didn't provision much at all. Some breakfast stuff and snacks, and maybe ingredients for one dinner. It was a lot like being in France and Italy -- when we didn't go out for meals, we just picked up what looked good in the local shops and markets on a daily basis. Each little town had something to offer. We were happy with local cheeses, bread, produce and meats (e.g. "prsjut" which is strangely like proscuitto).
Get your crew to point you to the local "konoba" - which is like a tavern. Many have a specialty called "peka," which is octopus or lamb cooked in an open hearth under a metal bell. Or a local seafood restaurant where you get to choose the fish to be grilled. One memorable evening, we drove way up into the hills and dined at a long rustic wood table under a canopy of fig and olive trees, enjoying small plates of fresh vegetables, lamb, etc., with an assortment of liqueurs and cheeses to finish off the experience.
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