I have found thru my limited amount of cruises that it all depends on the weather. Whether I drink too little or too much.
I think it has to do with distances between ports. If your next port is close the ship cannot travel at a speed that allows the stabilizers to work. We noticed this on the Golden Princess. It seemed to have excessive rocking and motion. But the ports were very close to each other in the Carribbean.
Give it another shot.