I would say the American Adventure is a big one to see, but it's a longer theater show and kids may lose interest. Almost like The Hall Of Presidents, It's one of my favorite attractions now that I am older but I remember it being torturous when I was a kid in Disney.
Haha...my sentiment exactly. I found MOST of Epcot (E.P.C.O.T. back then) torturous when I was a kid. I am hoping to make it fun for my kids when we go as they will be a little younger than I was when Epcot was first opened. Our plan is to do two days of Epcot...one for FW and one for WS. Not sure yet though because the kids will be so young...they may not need the two days because they won't be big enough for a couple of rides. I guess we'll see.
I just can't seem to get a sense of what it will be like... Will my grade school aged kids like it? Is it fun? Do you just walk and look, or do you interact?
There are tons of books and guides you can look at that will help you, but honestly I would say that experience is the only thing that truly gives a sense of it. A few things I would suggest:
1. Get the schedule for the performers. Some of the best times to be had in Epcot are from watching the street performances. They are amazing and most kids enjoy them.
2. Don't rush. Sometimes there are cool things to be seen in WS in areas that almost look like they don't go anywhere. Literally just go down the walkway and around the bend and you will see some cool things.
3. If the kids are tired, take a break. Seriously. If they have already been to the MK, Epcot will not be as exciting. However, that doesn't mean it isn't enjoyable. WS is big and a LOT of walking. Find a good spot and sit down, relax and enjoy some food or snacks.
4. If they like characters, look into doing some of the meet and greets. Some of the ones you'll find in WS include: Mulan, Snow White, Aurora and Mary Poppins. I think Pooh is there as well.
5. Illuminations is awesome. While I don't enjoy it as much as Wishes, most people I talk to think it's better. (I just love straight up fireworks...haha). I can pretty much guarantee the kids will love it...and you will too.