Hi Mary,
Thanks so much for writing. How exciting that you will soon enjoy your first Disney Cruise Line voyage! Disney Cruise Line has a host of onboard services and amenities for families that
travel with babies. Some of these include: complimentary diaper disposal units, bottle warmers, bottle sterilizers, cribs and playpens. All are available upon request from your stateroom host or hostess. You can also request a complimentary stroller from Guest Services when you board the ship. If your baby sits in a high chair, they are available at all of the restaurants on the ship. Next, you can find fresh, pureed veggies if you ask your server at the main dining rooms. Finally, if you happen to run out of any supplies (including diapers, wipes, rash cream, formula and baby-friendly toiletries) they are available in the merchandise shops on board.
You are welcome to carry on baby food and formula as long as the packages are unopened.
Mary, the most important thing I can tell you to back is your camera! You are certain to capture more memory-making moments than there is memory on your device. Have a magical cruise!