We were there just before Christmas and stayed at the Disney Hotel, there are always lots of characters there, and I think it is open to non residents, it certainly is in the lobby.
We used the Brits guide to ED and it was very useful.
Would take ski suits for the LO's if possible as it is cold, and like someone else we took along a buggy for our 4 year old, as she is a bit lazy easilly tired.
The rides we liked were, Buzz Lightyear, The Tea Cups, Carousel, Thunder Mountain, Small World, Dumbo, Pinochio, Peter Pan ride, and Small World x 100's.
Shows were Mickeys Winter Wonderland, Animagique,and Honey I shrunk the Audience.
We also went along to the Princess lunch.
We always watched the evening parade, before going back to the hotel for the evening.
We ate out in the park for lunch, it was pretty dire, about E40, for fast food for 4 of us, we only had to pay for one lunch as we pre bought all of our meals. If you pay for the "premium" package they can be used in all hotels for dinner. It's fine for drinks and snacks.
We ate at our hotel for dinner in the evening as it was fab, plus lots of characters there. We ate at Anettes Diner for lunch once and it was good. DD's enjoyed seeing the staff in rollerblades.
You will have a fantastic time, I'm not at all jealous.