another tidbit- the laundry detergent selection is very limited. If you have a favorite or have to us a specific brand ( like me for allergy reasons) its best to bring your own detergent. The laundry tabs are great, i bring a small travel size bottle filled with my liquid detergent. Their are laundry rooms on each passenger deck, coin operated. They aren't very big- 2 washers and 1 dryer usually.
Celebrity does not have self service laundries. It is one of the few items I fault them for. However, Celebrity enthusiasts state that they are on vacation and don't want to spend it doing laundry. I always liked that feature on Princess, however, that is no longer that meaningful anymore as we have reached Elite status where laundry and dry cleaning are free. (G)