We took ds las october when he was 10 (almost 11) months old. He was a preemie, so he's very small, and he just learned to crawl (properly, on all fours, instead of army crawling lol) on our trip! We had the best time! He loved Flik's Fun Fair in California Adventure. Loved it. And the playhouse disney show...he didn't watch TV and we don't have the disney channel either, but he loved it...all those kids, and the characters...he was in heaven. We also took him on the carousel in DCA, because we didn't want to wait in the line at DL.
In DL, well, of course he loved It's a small world, but unfortunately that's closed (we'll miss it as well in May!), and he really liked watching the bubbles go by the window in Nemo. Let's see, what else. He really liked the Tiki Room. And the Pooh ride. He didn't express any love for anything else, although he took it all in. The only thing he was scared of was Roger Rabbit, but I wouldn't advise taking a little one on that anyway, because they make you sit them on the seat next to you, and DS wasn't that stable of a sitter that he could do that well yet.
We did a character meal, after seeing how he was with the characters first, and he LOVED them. Wasn't even scared a little, he thought they were the best. He had a particular obsession with Eeyore, and he squealed and tried to jump up and down on DH's lap when Eeyore turned the corner in the resturaunt!
I'm sure you'll have a great time! Enjoy!