I feel like I'm piling on here

, but I'm going to add to the don't skip it crowd. My DD6 has been going to WDW since she was 1, and she has always loved Epcot. She still loves the slower rides. She loves The Land, Soarin', Spaceship Earth, Ellen's Energy Adventure, and Mexico. She loves looking around the WS pavilions. Her favorite place to eat is the Morocco counter service. She loves the movies in the countries, and she loves doing the coloring activity at each country's KidCot station. One time I made her a little passport book to get the stamp for each country.
I have done more than one trip where I have skipped DHS, and that was before the park was half-closed. However, if you really want to see the Star Wars stuff, I can see why you would want to go there. I am not sure if there's a whole day's worth of Star Wars activities, though.
I, personally, am fine with one day at MK, but I've been there before, and am obviously in the minority here. I can see why you would want two days for a first trip.
And, as so many have said, it really depends on your family. My family loves AK and often go there for two full days during one weeklong trip to WDW, others see it as a half-day park, and others skip it. It is the same with every park. No matter what you choose, you will have fun, and whatever you miss this time, you can see on the next trip.
