I think Disney is a pretty horrible name for a kid for several reasons:
Lots of people have mentioned that it'd be hard growing up with the name Disney. It'll certainly be shortened to "Dizzy" in elementary school at least, and even if it's said in a loving tone, that's not particularly complimentary.
In middle/early high school when "kid stuff" like DisneyWorld is absolutely un-cool, the poor kid's really going to be teased. She'll quickly grow to HATE everything associated with the mouse.
And then as an adult . . . well, just imagine the principal reading out "Disney Jones" as your daughter walks across the stage to receive a diploma -- and hearing a round of giggles from the crowd. Or writing "Disney Jones" at the top of a resume or a job application. Some people will associate this name with warm family memories, but others will see it as childish and lacking in serious ability. It'd be a handicap as a professional.
If you really, really, really want to call your child Disney, I suggest that you stretch it into a longer, more formal name for her official birth certificate . . . and then use Disney as a nickname. Disanna, Disella, Disilyn, Dislinda, Disandrea, Dislana, Dislieena, Disneah. I have to admit that I don't actually like any of those suggestions. Maybe do away with the "z": Dianna, DiLyn. Anyway, that'd give the girl a "normal" name for her birth certificate -- it gives the girl an out -- and then you can call her whatever you like.