I called DC about that yesterday. Its not a special promotion or anything.
Its the same discount (approx. 5%) that is always available with DC. I was a little PO'd that they made it sound like a special sale or something. You get the same percentage discount with DC on ALL admission media.
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1995: Disneyland Every Weekend!
Oct 1996: Port Orleans
Nov 1999: Wilderness Lodge
Aug 2000: Disneyland!
May 2001: Polynesian Concierge</font><font size=2 color=red face="Comic Sans MS">
Nov 2001: First Annual DIS Convention!</font>