I'd spend two days at MK, then one day at each of the other three parks. Then spend your sixth, extra day at whatever park you want to repeat!
You might be surprised which park you like the best. Most folks would probably recommend Epcot, but I always spend two full days at AK. Each person (and each family) is different, so I'd recommend leaving your options open.
Agree with this, but 1 day in each then decide. Only issue would be availability of FP+. A lot though depends on breakdown of family as other have said. Based on the fact that WP are out I'm guessing your kids might be young. In that case HS might be a good bet for a 2nd day. More information might help people advise you. For what it's worth, here's our favourites:
HOLLYWOOD STUDIOS
Star Tours - A really cool simulator type ride. Someone gets picked to be the Rebel Spy for each 'trip'. The CM who controls the doors picks them. Wear a 'First Trip; button and try and catch their eye. Smile nicely and look excited. When you site down, don't put on the glasses immediately, looks straight ahead and don't fidgit. Good chance of getting picked.
Jedi Training - Sign up first thing, no FP+ for this. Must have the kids with you. They get to 'fight' Darth Vader! They'll love it
Indiana Jones - Stunt show based on the movie. Adults can volunteer as extras, great fun.
Lights Motor Action - Really cool show and a nice way to rest for a while
Toy Story Mania - THE family ride in WDW. Hugely popular. Even at that time of year, a must FP+
Rock N Roller Coaster - Good thrill ride. In the dark. Might be a bit scary for younger kids, my DS10 still won't go on it, but DD & I love it. Not sure of height requirement
Tower of Terror - Love this ride. Again might be a bit scary
Muppets Show - Great fun
Beauty & The Beast- Not a must see for us but we did enjoy it. A musical based on the characters from the movie
Fantasmic - Fireworks and water show and more. Hard to explain. Must see
EPCOT Our favorite park.
Soarin - A 4D simulator ride on a kind of glider thingy. Really cool.
Misson Space - Another simulator type ride. There are 2, Green and Orange. Not for the claustrophobic or those prone to motions sickness. The green is a lot less intense, would recommend you try this first if you're unsure
Test Track - Haven't done the new version yet, but loved the old one
Turtle Talk with Crush - Kids love this, it's fun. Just sit in a room and 'talk' to Crush from Finding Nemo
Agent P's World Showcase - Haven't done this, is the replacement for Kim possible, kids loved that and is a really nice way to explore the world showcase with kids. Keeps them busy while the adults can stroll around.
Spaceship Earth - We like this, some don't. Not leading edge but fun and worth doing at least once.
Innoventions - We nearly missed this. If any of the kids are into roller coasters. must do 'Sum of All Thrills'. You design a coaster, or airplane flight (and some others) and then 'do' them in a simulator.
The Seas with Nemo & Friends - A gentle 'ride' through an aquarium
World Showcase - We easily will spend 1-2 days just wandering through here. A lot is hidden off the main track, just explore.
ANIMAL KINGDOM
Partly a HUGE ZOO, partly a theme park
Expedition Everest - Love this coaster
Kali River Rapids - Good raft type water ride
Dinosaur - Dark and possibly scary for younger ones. We don't mind too much if we miss this
It's Tough to be a Bug - Great show
Nemo the Musical - Class
Lion King - Great show - broadway type of production
Flights of Wonder - Great fun, missed it our first time nearly missed this our second time.
MAGIC KINGDOM
Well it's magic Kingdom !
The first walk up Main St and seeing the castle :smile:
There is so much to see and do here. I couldn't possible list them all but here's our top ones
Space Mountain - Indoor roller coaster in the dark. Note the 'cars' are 2 seater one behind the other, not side by side. May be an issue for younger kids
Big Thunder Mountain - Our first ever ride in Disney, will always hold a special place in our hearts. Good family roller coaster, fairly gentle but fun
Splash Mountain - Log/Flume water ride, good fun, you don't get too wet if you're careful
Monsters Inc Laugh Floor - Love love love this
Buzz Lightyear - Ssshh but we prefer this to Toy Story
Mine Train - Opening soon, so haven't ridden it. A gentle type family coaster
Haunted Mansion - Might be a bit scary. DW and DD love this, I'm not bothered either way
Jungle Cruise - If you get a good guide, excellent, otherwise just good
Pirates of the Caribbeann - Love this, again might be dark and scary
Mickeys Philarmagic - Another 4D show, cool
And after all that, there's the fireworks, Wishes and Illuminations.Both are excellent. Then there's the show they project on the castle in Magic Kingdom, Celebrate the Magic, really really cool.