Can you pick up the DDE card instead of ordering?

[caskar]

We are going in the middle of July and have not purchase an annual pass voucher off the DVC web site as of yet. When would you suggest I purchase an annual pass voucher and then, when should I call for the DDE card?

Or could I go down in July, buy the annual passes and immediately call the the DDE card, except we are getting there on Saturday morning. Aren't those offices closed on the weekend?

Thank you