Hmmm.. depends on what you were upgraded from? Mr October is correct on the elevator thing. Most people don't want to be near the elevators because they think there will be noise, but I don't find that to be the case. I would rather have the convienence of the short walk.
Did you book a gaurantee cateogry cabin or did you pick a cabin and pay that price? Because if they "upgraded" you from a cabin choice, I would question it. (Call themn up and ask them to put you back in midship.. claim you don't like the movement near the bow and that is why you picked a midship cabin.)
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise, Magic 1/14, Freedom x 2 6/14
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013