Off on a charter vacation, friends want to party together, couples may seek out nooks of their own and families will cherish a place for the kids to romp while the folks enjoy their chill time. Some like to sunbathe, others prefer shade. The skipper could be an old salt or a recent grad of a learn-to-sail program who needs a hand pulling the strings. Some come for the sailing, others for the revelry. And no one, I repeat, no one wants to get stuck in the smallest cabin, with a shared head.