as Rahns says, what time you arrive is not cast in stone, so take the first ferry leaving. Calling the ferry companies in advance is a waste of time. I have never seen anyone turned away from a ferry, so reservations are not required. The Riteway by Moorings is like a U.S. supermarket. We like buying our own produce, meats, and deli stuff. Walking the isles we always find some fun appetizers.