Sandy is correct here. The side of the ship that docks varies from port to port. So its a crap shoot on which side would offer the better view. And in most cases, both sides have a nice view. So I offer that it truly doesn't matter. Even on the Alasaka cruises you are traveling through the passage and have land on both sides of the ship to see. I wouldn't worry about it.
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
NCL Dream October 2006, RCCL Mariner OTS June 2007