QM2 is the most stable ship I have ever travelled on (including QE2). We sailed up the Eastern Seaboard of the USA on her in the tail end of a hurricane and she cut through what the Captain later told us were 40ft. waves with hardly and sensation of motion at all! Dont worry you will be fine!!!(And if all else fails go to the ship's Dr and have a phenergan injection, but you really will be very unlucky if you need that!