We used the nursery for our 15 month old on our 1st cruise. You can sign up for the times you want when you board the ship or soon there after. I'd do your Palo & Spa reservations 1st and then, head over to the nursery. As I recall, the room had a couple of cribs in it for the babies to sleep. The room is pretty small so, I don't know if your child will sleep with all that noise. Mine didn't. We signed up for a couple hours each night on the 3 night cruise around our dinner time. They don't feed your baby other than crackers. You can bring milk or juice in cup or bottle (I believe, can't remember now). We had late seating so, we would go to the show then afterwards go back to the room to get ready. My dh would run up to the buffett or plutos and get food. YOu could also order room service. Then, we'd feed her and get her ready for nursery. We dropped her off before going to dinner. She had a great time. We picked her up after dinner. It was so nice to be able to enjoy a meal without worrying about our toddler.
GL! And, have fun!