Carnival told me they don't use the pac n play. We took our 1 year old grandson this past June and we just brought his pac n play only because he would be use to it and have his own "smell" to it. We notifyed Carnival that we wouldn't need a crib and they were very nice and on the sail and sign card for the baby, they don't activate it (tip). At the dinner table, our waiter would have a napkin animal for Perrin and a bowl of fruit and a roll waiting for him. The staff were very attentive to the baby. He was the best little "cruiser". The infant pool is salt water, not like ocean water sticky, but non the less salt. It can irritate their eyes. I would suggest some eyedrops to soothe the baby. One of our group is an optometrist and he gave us some drops and it made him feel better.