Hello, Tatiana!
Happy Holidays to you, too!
Although Walt Disney World's recorded message about Disney Dollars states that they can be purchased at your local Disney Store, I recently called my local Disney Store and was told that they no longer carry Disney Dollars.
In researching your question, I called Walt Disney World information, and the person I spoke with was so very helpful! Disney Dollars can be purchased at Guest Relations at any of the Walt Disney World Resort parks, as well as Guest Relations at Downtown Disney. In addition, they can be purchased at the Concierge Desk at any resort hotel, as well as at the Information Desk at the World of Disney Store at Downtown Disney. To purchase Disney Dollars BEFORE you head to Orlando, however, you can order them via phone at (407) 566-4985, then select option #5. That office is open from 8:30 a.m. until 4:30 p.m., and is closed on Sundays. Here's
the link I used to get basic information as well as contact information for Disney Dollars.
Of course, you can also simply use a Disney Gift Card for this purpose as well, but I understand that there is something special about the look, feel and excitement of having your very own Disney Dollars in your pocket; it's an exceptionally useful tool for helping little ones to budget their spending money, too!
Best of luck in your upcoming vacation! Please send us another question at any time!