I'm not sure why there's all the hate for the patch. :shrug: I've used it a handful of times and it saved my life.
What people have said is right... Usually it's not too bad, and most people don't get sick. And that's coming from someone that does get motion sick. BUT... If the seas get a little choppy and the motion does get bad and you're not prepared... It can literally wreck a day or even two of your trip. And when you only have a handful of days for vacation anyway, that entire day is made that much worse, knowing you're wasting time.
My first few cruises, I did the dramamine thing, and just dealt with any weird feeling I had and fought through it. Then on my next cruise, I decided I would talk to the doc about a scopolomine (sp?) patch. He gave me a few and I was on my way. Outside of a dry mouth, I didn't really have any side effects. But the UPSIDES were amazing. Never before had I been able to snorkel before, even with dramamine, because it made me sick. With the patch, my wife literally couldn't get me out of the water! That's something that people don't think about... It's not necessarily the cruise ship that will cause the problem... It's the tender boats to the islands, or the excursion boats to get to where you might snorkel, or the rum cruises, and things like that. Nobody thinks about that, but lemme tell ya. They can be bad. But with the patch, I felt like I was 12 years old, and ready to take it all on, for the first time in my life. Amazing. And those are parts of taking a cruise that I used to really have to fight through and be miserable. Now, they're the highlights for me!
Also, we had one really bad choppy day at sea, and they said that about 50% of the people on board were in their rooms sick because of it. But there I was, out on the deck, lovin' life.
My advice is to be prepared for anything. Talk to your doc about getting a few patches (each one lasts a few days). Take dramamine. Or ginger pills. Or both. Then hit the cruise ship, and see how you feel. Try the dramamine if you need to. If it works, great. If not... Slap on a patch. There may be a side effect or two... Everyone is different. But if you're like me, if it gets to the point where you'll need it, you'd be happy to have a few side effects if it meant you could still be out enjoying your cruise, or tour, or snorkel, or whatever else it is you're doing.
Have fun!