I read this somewhere else on this site... it was really helpful.
I just spread mine out over the day. For MK, I started on the fantasyland side of the park and worked my way over since we have ADRs at Crystal Palace for diner. It was kinda stressful figuring it all out, but I feel good about it now.
Ranking System:
A - A must-get or risk waits of an hour or more.
B - Take it or leave it. Might make sense, depending on circumstances.
C - Chump. Rarely makes sense to get, but can also depend on circumstances.
*Attractions listed within the same priority group are in alphabetical order and not meant to suggest priority within the group.
Now, here are the rankings. Again, keep the the above in mind.
MAGIC KINGDOM
A - Big Thunder Mountain Railroad
A - Enchanted Tales With Belle
A - Peter Pan's Flight
A - Space Mountain
A - Splash Mountain
B - Buzz Lightyear Space Ranger Spin
B - Haunted Mansion
B - Jungle Cruise
B - Main Street Electrical Parade *Does not always appear as an option
B - Meet Ariel at her Grotto
B - Meet the Disney Princesses at Town Square Theater
B - Pirates of the Caribbean
B - The Barnstormer
B - The Many Adventures of Winnie The Pooh
B - Tomorrowland Speedway
B - Under the Sea - Journey of the Little Mermaid
C - Celebrate a Dream Come True Parade *Does not always appear as an option
C - Dumbo the Flying Elephant
C - Mad Tea Party
C - Meet Mickey Mouse at Town Square Theater
C - Mickey's PhilharMagic
C - Monsters, Inc. Laugh Floor
C - The Magic Carpets of Aladdin
C - Wishes *Does not always appear as an option
EPCOT
A - Soarin
A - Test Track
B - Maelstrom
B - Mission: Space
B - Turtle Talk With Crush
C - Captain EO
C - Journey Into Imagination With Figment
C - Living with the Land
C - Meet Disney Pals at the Epcot Character Spot
C - Spaceship Earth
C - The Seas with Nemo & Friends
HOLLYWOOD STUDIOS
A - Fantasmic *Does not always appear as an option
A - Rock 'n' Roller Coaster
A - The Twilight Zone Tower of Terror
A - Toy Story Midway Mania
B - Star Tours
B - The Great Movie Ride
C - American Idol
C - Beauty and the Beast - Live on Stage
C - Disney Junior - Live on Stage
C - Indiana Jones Epic Stunt Spectacular
C - Lights, Motors, Action! Extreme Stunt Show
C - Muppet Vision 3D
C - Voyage of the Little Mermaid
ANIMAL KINGDOM
A - Expedition Everest
A - Kali River Rapids
A - Kilimanjaro Safaris
B - DINOSAUR
B - Festival of the Lion King
B - Finding Nemo
B - Primeval Whirl
C - It's Tough to be a Bug
C - Meet Favorite Disney Pals at Adventurers Outpost