it's been 15 years since I went to Magic Kingdom...i vaguely remember anything there...all i remember was space mountain was closed for repairs, and being pissed off about that.
http://disneyworld.disney.go.com/wdw...=MKLandingPage
go to the website, and check it out...they have vast amounts of information on the park (i linked you to Magic Kingdom, because if you are spending one day there, IMO, that is the park to go to)...if you click attractions, they have rides and such listed by genre, including a section called Fun for Little Ones...
be sure to have at least one meal in the featured character dining places...that way, she can interact with the characters.
and have a turkey leg for us, will ya!
Not sure about Sea World, but it doesn't hurt to check out their website as well and look around.