YOu will be in the open ocean on this cruise so there is a little more motion than in Alaska, another favorite cruise of mine. If you're concerned about seasickness I would like to recommend Bonine. My daughter gets terribly seasick and she swears by this stuff, an over the counter, inexpensive drug. Start taking it the morning you sail, just a half tablet will do it, and you won't be sleepy, you can have drinks and live quite normally. My daughter swears by it.