yes, definetely use something to be able to quickly spot your luggage. Last cruise we realized that we should have done this because most of our luggage was black. There is a LOT of black luggage that looks very similar.
We saw someone that used bath gel scrubbies. They tied one to each bag handle. You can get them in bright colors and they make double use becaus eyou can use them in the showers with the shower gel the cruise supplies. I thought that was a great idea... but now everyone will do 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, Celebrity Silhouette 2013