Welcome to Mousebuzz!!! :happy:
Magic Kingdom is definitely an “all-day” park, but you don’t have to stay there all day. My family likes to hit MK in the morning with EMH and then leave and go to a less crowded park. Then another day, we might head to MK for the evening parade and fireworks. We’re kind of ADD when it comes to park touring.
Each of the parks is a “morning” park for certain attractions, so I suggest that you start your morning in a different park each day. You might look at the EMH for guidance. And then you’d probably want your Epcot morning to be the same day as the Norway Princess Breakfast (which, by the way, is a very good choice!).
Morning attractions for us are as follows:
Magic Kingdom: Fantasyland attractions (in order according to how long the lines will get later in the day - Dumbo, Peter Pan’s Flight, Winnie the Pooh, Mad Hatter’s Tea Party). We like to hit the attractions that you can’t FP (like Dumbo) in the morning when there are no crowds. Right when the park opens is also a great time for Fantasyland because by noon, it will be packed!
Epcot: FP and ride Soarin’ (Maybe Test Track?.. there’s only one fast part. You might try it out for DH and DD)
Animal Kingdom: Kilamanjaro Safaris
Hollywood Studios: Toy Story Mania, I don’t know about RnRC and ToT for your DH and DD, but they’re also popular attractions
Good luck with your research, and post other questions as you have them! :happy: