Studies have shown that kids number one park is the Magic Kingdom, so plans should focus on this park if the intention is to provide the children with the most memorable experience.
Consider splurging and purchasing prior to the trip and provide to the children (considering their ages) a copy of Birnbaum's The Offical Guide, Walt Disney World for Kids by Kids. It tells you what kids tend to like and dislike within all the parks.
1) Bring a camera and be prepared to take lots of pictures and remember you can take pictures right along side CM's who take prospective photos of families in all the parks too...it is not a problem and it doesn't cost you. I also found our photos to be better than the CM's.
2) Collapsible coolers are allowed into the parks so you can bring your own food and drinks into the park to save money. They can also be stored in the park's lockers at a low cost in comparison to food cost at Disney's Resturants.
3) Use FAST PASS to manage and maximize your time.
4) Check the Character Location Guide -- The Magic Kingdom has these at every character location, the main tip board on Main Street, and at a lot of merchandise locations too.
5) If you don't stay on location you can still use can still use Disney's monorail, yachts, boats, and Disney buses...if time allows the AKL viewing areas may be of interest if the girls are animal lovers. Request to have the kids ride up front when you ride the monorail...you might have to wait a few monorails but the kids will probably love it and remeber the experience. They should also ask for a certificate from the driver too.
6) Understand Early Magical Hour (Early Entry) designated parks will be busier than normal on their desinated days.
7) If money allows splurge on a Character Breakfast or Dinner at Chef Mickey's-Contemporary Resort
MAGIC KINGDOM
1) Everything in Fantasyland (for little girls...Dumbo, Snow White, Peter Pan, Winnie the Pooh, Cinderella's Golden Carrousel, Mad Tea Party, PhilharMagic, Sorry but It's A Small World is Currently closed

).
2) Toontown (Barnstormer, Toontown Character Meet and Greet [Judges Tent], Mickey, Minnie Homes, , etc)
3) Buzz Lightyears Space Range Spin
4) Stitch's Great Escape
5) Share A Dream Come True Parade
6) Wishes Fireworks Display
EPCOT
Living Seas
Honey I Shrunk The Audience
Test Track
Illuminations
Mexico Pavillion -El Rio del Tiempo
Ice Station Cool - Innoventions Plaza (free drinks from around the world)
Jammitors - Future World (musician using trash cans to make music)
Talking drinking fountain - Near land pavilion
Cool Wash by Test Track to cool down (water mister)
DISNEY STUDIOS
Muppets
Voyage of the Little Mermaid
Disney Playhouse (don't try to sit to close to the stage since the stage itself will obstruct your view)
Studios Backlot Tour
Honey I Shrunk the Kids Movie Playground
Al's Toy Barn (mmet and greet Buzz, Woody, Jessie)
Monsters Meet & Greet across from ABC Commissary (special times)
Disney Stars & Motor Cars Parade
ANIMAL KINGDOM
Festival of the Lion King (must see for children)
Kilimanjaro Safari
Ok, I think that is enough from me.
Oh, I think it is a unwritten rule that every kid has to have a setMickey Mouse Ears hat too to make the trip offical.
