Just cruised on the Freedom of the Seas the end of November. We did have a few days of rough seas and yes we could feel the ship moving. None of us got sick and the other passengers we saw all seemed fine as well. It was somewhat difficult at times to walk in heels during diner but hey..we are on a ship in rough water. It didn't bother me but I don't get sea sick. It just adds to our stories to tell when we get home!