Yes, you can get them with a voucher. I hadn't even received my voucher yet, and I got one.
If you go to allearsnet.com, they have more information on the DDE card.
Here's what they have:
WDW DINING
Disney Dining Experience: Receive $25 off the regular price of the Disney Dining Experience Membership. Benefits include:
* 20% discount on all food and beverages at over 70 participating Resort hotel and Theme Park restaurants (discount is valid for a party of up to 10 Guests).
* Resort and Theme Park parking for dining purposes
* Invitations to special member-only food and wine events, winemaker dinners and celebrity chef dinners
* And more!
Call (407) 566-5858 (Monday - Friday, 9 a.m. - 6 p.m. E.S.T.) for more information or to purchase your annual membership at the Passholder price of $50 (plus tax). The Disney Dining Experience Membership card is not accepted on holidays, including New Year's Eve, New Year's Day, Mother's Day, Easter, July 4, Thanksgiving Day, Christmas Eve and Christmas Day. Once you order your Disney Dining Experience membership card, please allow 2-3 weeks for processing.
Note: I was told last month that it would take 6-8 weeks to receive my card, but they could fax or e-mail me a letter if I didn't receive by the time I went on my trip.