More on food (gee, what's my favorite thing?): Most of the food at the MK is fair to poor, unfortunately. We do like the character dinner at Liberty Tree Tavern. The food is better than most MK food (not as good as most Epcot food) and, most importantly, they have Birch Beer.
The Noodle Station used to be good but they changed the menu and we weren't impressed. Cosmic Ray's has a pretty broad selection, with a toppings bar for the burgers. Nothing wow, but nothing nasty. Our biggest gripe about MK is the lack of a Carnation Cafe.
Apparently there are other places to eat at Epcot besides the World Showcase. We ignore them, and so should you.
I second the nod to Flame Tree BBQ at AK. Tusker House is okay, but seating is in big rooms and it's really noisy. (Do check out Harambe in general, though. There are often strolling performers with instruments I've never seen before.) Flame Tree has these scattered seating areas, more like park shelters. And if you go all the way down to the water, you can watch the character boat go by. The key lime pie, while nothing spectacular, had the good sense to refrain from being bright green.
At AK in general, take the time to look at things. Many people say it's a half-day park, but we're always there at opening and reluctantly dragging ourselves out at closing, and we always miss doing something we'd really planned to do. There are trails winding around the Tree of Life that let you get close to portions. Look behind you, above you, etc. - there's always something tucked away where you didn't expect it.
Also, since much of the focus is wildlife, stop and watch. Sometimes it takes a minute to really scan the area for all the bits of life. And you never know when that spoonbill pelican is going to stand up and adjust its nest, complete with eggs, right in front of you.
And despite what others think, we like to ride out to conservation station and watch the goats in the petting zoo part. They have a little playground set up and it's fun to watch them play king of the hill on a picnic bench.
As for the studios - definitely eat at the Hollywood Brown Derby. The food's a treat, the decor is a treat - it's all wonderful. And do see Fantasmic. It's not the same at all. There are parts that are woefully underwhelming (Pocahontas segment instead of Peter Pan), but I think the film portions are different, and we liked those better. (If they've updated the film bits at DL, ignore that last bit.) And watch for streetmosphere. They have some of the best of all the parks.