Even though the ship is really big, the ocean is infinitely larger. Same rules apply. Also for comfort the stability is kept comfortable, which is the same frequency as sea sickness
The food aboard ship is AWESOME. I just saw a video about the buffet and among the things offered is HONEY COMB HONEY which I haven’t had in years. I can’t afford to be too sick to eat the food thus the absolute need for the ginger candy which definitely works for me.