Hello!
So here are the fast passes I always love!
MK- Space Mountain, Splash Mountain, Thunder Mountain, Seven Dwarfs Mine Train < These wait times are always long, especially the mine train. If you are looking for more of a thrill I would choose space, splash or thunder. The mine train is very cute but it is more of a family rollercoaster. Though, if you sit in the last row it's awesome! Fast and fun

You definitely don't need a fastpass for it because it never has a wait, but if you are looking for a way to cool off, ride the PeopleMover! One of my favorites!!
Epcot- The thing I hate about Epcot is that they make you choose between Soarin and Test Track. It's impossible to pick just one! I usually choose Test Track because it is more thrilling than soarin, but if you get to epcot early, definitely head over to soarin first thing and give that a ride. I also choose Spaceship Earth and The Meet Mickey and Friends character meet and greet.
AK- DEFINITELY EXPEDITION EVEREST! Awesome ride! Also, if you can, I would pick kilimanjaro safaris but if you do, make sure to set the fastpass for the morning. That is USUALLY the time all of the animals are out. Also Kali River Rapids is awesome! Don't miss the festival of the lion king either! It's a beautiful show.
I hope you have an awesome trip! I hoped I helped narrow some things down!
