The "Patch" is not always good. I think that if you can get by without drugs, you are better off. I, myself, do not get motion sickness (knock on wood) but friends I often sail with use a combination of sea bands and ginger capsules. They all swear by that "natural" combination. One friend takes a ginger capsule daily, year round!
Coral Princess May Panama
Regal Princess JulyAlaska
Star Princess Sept Baltic/Trans Atlantic
(two cruises B2B)