If you’re worried about feeling ill, look for a cabin toward the middle of the ship, and avoid anything too far forward or aft. Additionally, experts also say the lower levels of ships provide the most stability, so you might want to pass on upgrading to a higher deck. However, if you find your seasickness is quelled by fresh air, you may want to stick with a higher deck after all, as those are generally where the cabins with balconies are located. In the end, the safest bet is probably to shoot for the lowest balcony level toward the middle of the ship. Got all that?