Few things will ruin a cruise faster than feeling seasick. To help prevent motion sickness, the Centers for Disease Control and Prevention recommends staying hydrated, curbing alcohol and caffeinated drinks, eating small meals and limiting external stimuli. And while some experts say that cabins in the middle of the lower deck of a ship may help temper motion sickness, the CDC has reported that “cabin location on a cruise ship does not appear to influence the likelihood of motion sickness.”