You can't log into the passholder site with a willcall. You have to have a ticket or voucher. As for the DDE, you can call the office and tell them you have a will call certificate and see what they suggest. However, for the DDE you don't want to order your card until you are closer to your trip because it is active the day you order it. Keep in mind that the DDE office if only open M-F, during business hours.