Hi Lori! I would definitely make your first stop the Magic Kingdom! Your 15 month old will love it! There's so much to see and do, but head straight to Fantasyland. "it's a small world", Dumbo the Flying Elephant and the Mad Tea Party are just a few attractions here to enjoy. Some other
must do attractions in the Magic Kingdom include the Jungle Cruise, the Magic Carpets of Aladdin and the Many Adventures of Winnie the Pooh.
I'm not sure if you've decided on visiting another park, but I would choose betwee the Animal Kingdom and the Hollywood Studios. If you go to the
Animal Kingdom, be sure to visit Kilimanjaro Safaris. The Festival of the Lion King and Finding Nemo, the Musical, are fantastic shows! The Boneyard is a great place for your child to run and play, and dig and climb, and then you can head to Tricera Top Spin. There are so many amazing animals to see as well!
While at the
Hollywood Studios, there are many great attractions! Disney Junior Live on Stage is a must do! Muppet Vision 3D, Beauty and the Beast, Live On Stage and the Voyage of the Little Mermaid are all a blast!
Hope this helps Lori! Write back with any other questions!