Hi Silvia,
How exciting for you to be taking your baby to Walt Disney World! There is so much that is suited for younger kids. You're going to have so much fun!
Please take a look at Disney's website and find the
Attractions page. The ones that say Guests "of any height" are the attractions that are suitable for your baby. I also suggest that you look through Disney's
Planning for Pre-School Kids & little Ones webpage. This is an incredibly good guide that will help you plan the perfect, kid friendly vacation for you and your baby.
By the way, Disney theme parks do have
Baby Care Centers. They provide a nice, quiet place where you can take your baby for breaks during the day. There are also baby supplies to purchase if you find that you need something. They carry disposable diapers, baby food and formula, as well as some types of over the counter medications.
I really hope this information helps you Silvia. Thanks for visiting the Moms Panel. Have a pixie dusted vacation!