The whole " 3 meals a day" thing can easily go MOB on charter.

Lunch is usually the one that goes first. You can recover it at 3 or 4 PM, when it becomes a hearty Happy Hour aboard. After which, you really don't NEED Dinner. Depending on where you overnight, you might decide to go ashore for music or entertainment, or you might very well be somewhere where there is none. Late night snacks aboard are not a bad thing.