DVC members receive a publication called "Vacation Magic" on a quarterly basis from the Disney Vacation Club, a Walt Disney company. In the Spring 2007 issue on page 27 it states: "Park freely (at select Resorts): While valet parking charges at Walt Disney World Resort hotels have changed to $10 a day, remember that Disney Vacation Club Members receive complimentary valet parking at select Resorts, including Disney's Beach Club Resort, Disney's Boardwalk Resort and Disney's Wilderness Lodge. (Please note, however, that parking for the purposes of visiting a Theme Park isn't permitted at any Walt Disney World Resort hotel.) Beginning July 2, Disney's Animal Kingdom Lodge will become the latest Disney Vacation Club Resort to offer Members this complimentary service."
(bolding added by me for emphasis)
Is that official enough for you??