I too am a person who has to sit in the front of cars so I can see where we are going. I spent many a sick afternoon by the side of the highway as a child, after time spent riding in the back of our car on long trips to see relatives.
I have never gotten sick on a boat, not small pleasure craft or larger ones like the Circle Line in NY. But I went prepared with dramamine last summer because my DD gets seasick. She began taking it before we even got aboard! DH, DS and I hung over the railings as the ship sped off. DD stayed near the walls at first, but soon found that the dramamine was working GREAT!
Well, funny thing was, on the second night of the cruise, as we were walking to dinner, I began to feel funny. We were walking along deck 3 I think, along those big windows between Parrot Cay and Tritons. As I was looking out I noticed I was walking against traffic so to speak -- the ship was going one way and I was walking the opposite way. A deep pain in my stomach and nausea swept over me. It was like no car sickness I ever felt. I stopped and sat down to rest awhile. It only got worse, so I ran back to the cabin and popped some of those dramamines. Within 10 minutes I was all better!
Needless to say, last week aboard the Wonder for the second time, I was well prepared with my dramamine supply. I began taking it right away because if you have ever experienced sea sickness, you would do anything to avoid it. (it made me a little sleepy, but not so much as to not enjoy the trip)
Have a wonderful time!