When we were on NCL two years ago - there were toiletries . . . however, it was liquid soap and combination shampoo/conditioner in a dispenser in the shower. Neither of which I use. If you are particular about what you use, you should pack at least travel sizes of what you need/want. If you can or will use what is there, no need to pack anything. Also, as stated above, you can most likely find what you need either in the ship's store or in a grocery/pharmacy in your first port of call.
Just got off of the Caribbean Princess a couple of weeks ago. Plenty of toiletries as all have already said. In fact, my wife kept taking them and brought enough shampoo and conditioner home to last me a while! I had to tell her to quit it!! Have a great time! We did!!
My husband and I just got back from our Caribbean Princess cruise last week. I forgot all my shower stuff, lotion included. I have curly hair so I use a frizz reducing shamp/cond, I used the items in the bathroom the whole time. The conditioner was great!! I used the bars of soap which I don't use at home because it dries my skin too much, but I didnít have a problem at all. The lotion was great too!! As long as you like eucalyptus scent, the toiletries are great. It's from the spa. Better then in the gift shop and you steward will refill them for the whole trip.