Even with the night time attractions, I don't think AK will ever be an all day park for us. We've always gone at rope drop and done Expedition Everest 2 or 3 times, then the safari followed by brunch at Tusker House. After that we see a show...either finding Nemo or Lion King, and that's about it. With your kids ages I would think Expedition Everest, Dinosaur, Kali River Rapids, etc. would be out, except for maybe the 7 year old, so I couldn't see it being an all day park for you either. The first time we went, we did everything and a lot of the attractions ...jungle trek, flights of wonder, etc. just didn't really hold a lot of interest for us, not enough that we ever felt the need to do it all again. So now we just do the top few picks. We usually go to HS in the evening of our AK day, because my kids like to do just 1 or 2 shows and/or rides then go see Fantasmic...with the Jungle Book/River of Lights you could return to your hotel for the afternoon and go back to AK that evening for the show. In terms of your itinerary, I think MK every other day is a good choice. If AK is a half day that will actually be nice, you can recharge and enjoy your resort pool and give the kids a chance for down time, which they will appreciate!