Hello Mike!
In just a few days, your family will be arriving at the MOST MAGICAL place on earth! I know you are getting so excited!!
I would have to say the best Disney Theme Parks to visit with a 19 month old are Magic Kingdom and Hollywood Studios!
Magic Kingdom: All the attractions and rides are based on movies and Disney characters she will recognize. When you arrive at Magic Kingdom, go straight to Fantasyland. Every attraction in this area is built for families with small children. There are definitely other great things to do with your princess in Magic Kingdom!!! To make it even easier for you to plan, click
HERE for a list of all the Magic Kingdom attractions. Please note that if the "age range" on the attraction says "pre-schooler", then it is something your daughter will enjoy.
Hollywood Studios: If your daughter loves Disney/Pixar characters, then she will LOVE Hollywood Studios. They have just launched a brand new parade featuring all of your favorite Disney/Pixar characters including Monsters, Inc. and Toy Story. And speaking of Toy Story, don't forget to ride the most incredible attraction at Hollywood Studios, Toy Story Mania!! She will also love Beauty and the Beast -Live on Stage as well as the Voyage of the Little Mermaid stage show. My kids also love the "Honey, I Shrunk the Kids" Movie Set Adventure Playground! For a complete list of Hollywood Studios attractions, click
HERE.
I hope this helps in your planning! If you have other questions, please let me know!
Have a MAGICAL day!