My experience has been that the laundry service is OK if you need it but nothing special. They do not use fabric softener or whatever else makes the clothes smell fresh and clean. It's just a basic wash and fold good for Tshirts or underware but not really suitable for nicer clothes.
Unfortunately all ships do not handle Platinum debark in the same manner. Some will actually escort you off the ship first while others just lump Platinum Members in with the self-debark people and don't seem to care that you do not get priority debarcation.
56 Carnival: Mardi Gras, Ecstasy X2, Fascination X6, Celebration, Elation X5, Glory X5, Fantasy X4, Valor, Holiday X3, Imagination, Liberty, Spirit X2, Freedom, Destiny X2, Splendor X2, Dream X2, Conquest, Legend X3, Victory, Sensation, Paradise, Inspiration, Magic X2, Triumph, Miracle X2, Breeze, Sunshine X3
7 Norwegian: Sky, Jewel, Dawn, Epic, Pearl, Breakaway, Getaway
7 Windjammer: S/V Legacy X3, S/V Polynesia, S/V Caledonia, S/V Diamant, S/V Sagitta