I always cash out for Disney Dollars! And YES, they mail them to you~ and usually pretty quickly!
Here's all you do:
1) Click on "[Cash Out]" button at top of page.
2) Go to the box that says "Extra: Type any extra information you want. If your login Email is not the same as your PayPal Email, please include your PayPal E-mail."
Type in something like:
"...I'd like to cashout for $xx.xx in Disney Dollars. Please mail them to: My Name, My address & zip...."
3) Click "Submit" button.
Remember, it costs an extra 50-cents (for s/h). So if you want $20.00 in DDs you have to have $20.50 in your account.