It can help greatly if you do some research into etiquette guidelines beforehand — this will ensure that your interactions and appearance remain respectful while onboard such a vessel throughout your stay — no matter how informal they may appear outwardly! Knowing details like timetable preferences may come in handy too—such as making sure meals are served punctually and cabins kept neat where possible—and keeping children off certain zones until after certain times (unless directed otherwise). Alongside this, bringing enough sunscreen is essential!