When we cruised w/ our little one dcl provided a pack and play for her to sleep in. Oh, make sure you bring a blanket for your little one. Have a wonderful cruise!
You can ask your TA to request one but since they have the ages of all the kids, they will probably assume that a 14 month old will need the pack and play.
One word of caution regarding pack and plays... my dd hated hers (as did children of some of my friends). The bottom is hard as a rock and she would never settle down in it. Your baby will be older and so will be able to turn him or herself, so I'd recommend either bringing a piece of egg crate to put under the sheet, or lots of extra blankets for padding. Another option is for one of you to sleep with the baby in the "grown-up" bed while the other sleeps on the fold-out couch. Just something to keep in mind so you don't end up with a sleepless night!
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