Marymoo- Im another one who thinks AK is a half day park. Its our least favorite, but we do still go every trip. There are a few great things to do and see. If your kids are ok with dark 3-d shows, Its tough to be a bug inside the big tree of life is a must see. Its not scarey like Honey I Shrunk the Audience is. Its a really cute show. My kids like it. Its cool to walk around the tree, and acually go inside of it for the show. Your kids will love the Safari Ride too! Its great! There is a Dumbo type ride over in the new section, Dinoland. Im not sure if all the kids will be big enough for the rollercoaster, Primeval Whirl. Its kind of jerky. Not a great fan of it. Dinosaur is a big favorite of ours.. but its dark and intense. Again, not sure if your kids like that kind of thing. Mine liked that ride since they were 3 1/2 & 5. There is a boneyard playground they might like. There is also a river rapids water ride, that we have never been on. We never wanted to get soaking wet, so we skip it. Other than that, the rest is shows, and walking trails to see the animals. If you have acess to a zoo at home, Id personally skip the trails. I wouldnt do conservation station either. It was boring for my kids when they were that age. Festival of the Lion King is good. They will probably like Tarzen Rocks too ( you might not like it..haha) The bird show is ok, but skipable if you are doing a half day. So is Pocahontas. Take them to Camp Minnie Mickey and see the characters there.
My kids love Epcot. Its definately at LEAST a one day park. Its more like a one week park because there is so much to do and see. If you only have 2 days left, Do a full day in Epcot. Split AK & MGM. If you get to AK by 9, you can be out of there by 1-2. Leave there, and go straight to MGM. See the parade at MGM. It has tons of characters. Then you have all late afternoon & evening to see MGM. The kids will like Beauty & the Beast on stage, Voyage of the Little Mermaid, Muppets 3-d show, Indiana Jones stunt show..and of course Fantasmic!! Make sure the adults and even the kids if they are big enough, hit Tower Of Terror & Rock N Roller Coaster!!