Hello Lindsey!
The BEST and most MAGICAL way to experience Walt Disney World is through the eyes of a child! Walt Disney World caters to families with small children, and the Disney Park attractions for toddlers are "practically perfect in every way!"
There are so many attractions your son is going to enjoy! For a complete list of Disney attractions geared toward Pre-Schoolers, check out the
Attractions at Walt Disney World Resort webpage. On the left hand side of the webpage, just click the "Recommended Age" tab. There you can sort each attraction by age category.
Since your son loves Disney Junior, your family will not want to miss
Disney Junior - Live On Stage at
Disney's Hollywood Studios! Your son will experience a live and interactive show with his friends from "Mickey Mouse Clubhouse", "Handy Manny", and "Jake and the Never Land Pirates." I have five kids of my own, and they LOVE this show!
I hope this helps in your planning! If you have other questions, please let me know!
Have a MAGICAL day!
Wes