Though it may not be right, it is Disney's company policy. As others have pointed out, I'm sure this is explained in detail. If you can't for any reasons follow these guidelins, then do not except the job. This policy has been in existence for many years, and I highly doubt that a case could be made that it discriminates against this one culture.
This next part is entirely seperate, but yet still somewhat realavent. I'm tired of the youth of today feeling that they are owed something. They should not expect to get a job in a professional setting that has very strict standards and show up to an interview with multicolored hair, piercing all over their faces and visible tattoos. Let's face it, that is just how corporate America is. If you can't deal with that, then don't expect to get the "good" jobs. (Again this was not aimed at the above topic, mearly an extension of said topic).