To reduce motion sickness, choose a stateroom in the middle of the ship on a lower deck. You will feel any sway of the ship less in this section. Although it may seem counterintuitive, if you're worried about seasickness on a cruise, book a stateroom with a window or a veranda.

For passengers prone to motion sickness, the "Golden Rule" of cabin selection is to book a room that is mid-ship and on a lower deck. A cruise ship acts like a giant see-saw; the further you are from the center (the pivot point), the more vertical motion you will feel. Therefore, cabins located at the very front (bow) or the very back (stern) experience the most "pitching" (up and down) and "rolling" (side to side) movement. By staying low and centered, you are positioned near the ship's center of gravity and the point of least rotation. Additionally, choosing a cabin with a balcony or a large window is highly recommended, as it allows your eyes to see the horizon, which helps your brain reconcile the motion your inner ear is sensing. While modern ships utilize massive computer-controlled stabilizers that can eliminate up to 90% of rolling motion, the physics of the ocean still favor those in the "middle-bottom" of the vessel. If you are extremely sensitive, avoid the highest decks where the "sway" is most pronounced, and try to spend your time in public areas located near the ship's horizontal and vertical center.