kevin75 said:
i am not really basing a decision on it entirely, but i have heard that EMH aren't really worth it due to crowds. i am really just trying to figure out what is going to be the cheapest option that gives the best experience.
It really depends on the time you go. I've been during the dates you specified and normally find the crowds to be moderate.
Magic Kingdom tends to be the worst as far as crowds. However, if you're going on a time that isn't SO crowded, you'll find that it isn't so bad.
MGM during EMH always is a success for me. It tends to be open and airy - little crowding and just nice. Everytime I've done EMH at MGM it feels like a company picnic.

But that's just my experience.
EPCOT can really go either way. But it's still nice when it's not so crowded. I've yet to do AK EMH.
As others have said, there are many other reasons to stay onsite. Onsite transportation (as much as people complain about the buses, I find them not to be so bad - they can be a little crowded at times, but to me, it beats going to my car, getting out of WDW traffic and leaving that little bubble that WDW creates - also, no parking fee), being able to use your hotel key to pay for items and food within the park and just the trademark Disney service.
I love staying onsite. I feel you really would too and I think it would really make your family's vacation a very memorable experience.
Disclaimer: I swear I don't work for Disney! Just a big fan.
