Use proper handwashing techniques throughout your voyage, but especially after using the bathroom and before eating. Avoid any food or water that you think may be contaminated. Avoid raw or undercooked shellfish. Avoid unnecessary direct hand contact with surfaces such as public toilet room door handles.

To prevent food poisoning (especially the highly contagious Norovirus) on a cruise, your first line of defense is vigorous hand-washing with soap and water, as hand sanitizer is not effective against all stomach viruses. At the buffet, always use the provided tongs and never use your hands to pick up food; if you see another guest doing this, notify a crew member immediately. A 2026 "pro-tip" is to avoid "tepid" food; ensure hot food is steaming and cold food is properly chilled. Be cautious with high-risk items like pre-cut melons or raw shellfish if they have been sitting out. Additionally, stay hydrated with bottled or filtered water and try to maintain a strong immune system by getting enough sleep. If you start to feel unwell, report to the ship's medical center immediately; they can provide effective treatment and help prevent a wider outbreak, often at no cost for "public health" related issues.