Hey, Chevy!
If I was taking my own two year old to any of the four theme parks, it would absolutely be the
Magic Kingdom. I just think it is the crown jewel of the Walt Disney World theme parks. It has a great blend of attractions to appeal to people of all ages, and on top of that, there are shows, a parade, and fireworks. It is so my happy place.
With a two year old, you'll be able to enjoy classic attractions like
"it's a small world",
Dumbo The Flying Elephant, and
Prince Charming Regal Carrousel. Of the newer attractions, I really love
Enchanted Tales With Belle. Such an adorable experience.
Because you only have a few hours to play with, definitely take advantage of
FastPass+. If you purchase your park pass in advance, even if you're not staying at a Walt Disney World hotel, you'll be able to book up to three attractions 30 days in advance of your visit. This will help minimize wait time for those attractions, and give you more time to pack in the fun.
If you can squeeze in a character meet and greet, I absolutely adore the photos of my girls when they were little with their favorite characters. Many of them are on the walls in my home, and they even all excitedly went to see characters on my spring break trip with them last year - and the youngest is 12!
Enjoy your magical hours!