Hi Nima,
Welcome to the Disney Parks Moms Panel and thank you for the great question. Our family loves to start and end our trips with a visit to Magic Kingdom. Staying onsite at Disney's Beach Club will provide you complimentary transportation to and from the Parks, making afternoon nap time a breeze. I would absolutely recommend napping after lunch during the heat of the day, which will also maintain a predictable schedule for the little ones. It'll be quite easy to return to the Beach Club in the early afternoon. You can then head back out to the Parks fully rested to enjoy all of the exciting nighttime entertainment. There's something very special about riding Dumbo the Flying Elephant in the illuminated evening hours!
You'll want to take a look at the
Park Hours calendar to determine when Extra Magic Hours are scheduled. Take advantage of these additional operating hours, exclusive to Disney Resort Hotel guests. My only other suggestion is to begin and end with Magic Kingdom, (plenty to see and do in two days!) and allow the Park calendars to predict which of the 3 Parks you enjoy on the subsequent days. Even if Extra Magic Hours are offered at a different park on our first day, I simply MUST visit the castle upon arrival! It's our family's tradition.
I wish you a magical vacation, Nima, and please do visit me again with further questions. I'm happy to help.
Sherri