I've never been on a boat. Unless you count a small, busted up fishing boat which probably would have sank if someone had got on it with me, then no. Therefore, I don't know if I'd get seasickness.

I'd like to go on a cruise one day though. I'd have nightmares about huge waves, but eh. Who wouldn't want to chill by/in a pool, on a boat, in the middle of the ocean?