You can lie in bed all day on a cruise if you want. The modern ships have very good stabilisers and are so big it is rare (I find) to experience any motion.
Of course if you do things like try to cross the Atlantic in winter in an old small boat! QM is very stable I would add. The reason I don't like her so much is that she is too big for me. I find her not as friendly as her sisters. But that's just me!
Can You Name 5 More Songs? (number 2)