Keep in mind that the interest on a personal loan cannot be deducted on your taxes, unless you use a Home Equity Line of Credit.
When financing through Disney, they title it as a deeded property, which entitles you to deduct all interest on the loan (like a second home).
Also, Disney does not report this transaction to the credit bureau's. Unless you quit paying of course.
And from what I've read, Disney is much more forgiving on past credit issues or problems. Worst case scenario, they make you put more down on the deposit.
Just a thought...