If no one has booked your follow on cabin there's a chance you can keep it. It's a game of chance which cabin you'll be allocated. If you look at what's available. Usually bow cabins with restricted views from the balcony. Stern cabins and Sun deck cabins. Although Sun deck dearer there's a chance that lower decks will be sold before Sun Deck.So if anyone is afflicted to the motion of the ocean these cabins I wouldn't take a chance on especially in winter.