Unpack. It will make life much easier because there really isn't a good place to leave your suitcase except under the bed. You'll have to fight with the bedspread every time you need something! I don't throw my dirty clothes in my suitcase because I usually end up with things I just didn't wear and are still clean. I use plastic shopping bags for my laundry and leave it in the closet. But, once I've worn something or decided not to wear an outfit at all (because we ate in the cabin instead of the dining room for instance) and I know I won't need it again, I pack it... like a gown or a dress or those extra shorts and tshirts. If I know I'm done with it, it goes into the suitcase. Same with accessories, shoes and purchases I make. By the end of the cruise I'm more than half packed! Packing to go home is easy... no decisions to make because it all has to go in!