Your first duty should be a frank discussion of the realities and constraints of boating life, and your boat in particular. I'm not saying you should dissuade visitors, but you must remove some of the stars from their eyes. I love my boat, Papillon, but I wouldn't suggest that living aboard is an exercise in glamorous living. On the contrary, I know far more about offshore power failures, blown spinnakers and the path our water takes than I ever envisioned. I met a woman in Cartagena, Colombia, who describes her lovely sailboat to potential visitors as a "no-star resort." I try to explain that our life aboard is more like living at a rustic cottage than in a luxury resort. However you do it, be honest with visitors about your living conditions.