I have been the "provisioner" for eight people on a catamaran more than 30 adventures. I find out their likes and dislikes and try to accommodate as best as possible. However, I provision for breakfast, lunch, and alcohol and snacks for happy hour. We eat dinner our every night. It can be as a group or individuals and couples can fend for themselves. This has worked SO WELL that out of the 104 people that we have hosted (many repeats) ALL claim it to be the best, relaxing, vacation they have ever had. Never come close to a dispute, never lost a friend. And I have always used one of the local markets. Best part now is that you can pick up almost any food item along your trip at a local market.