Along with the C and Z codes - available to the general public, there was a DC discount on the UPH tickets, the Discovery Magic package, and car rental from National.
So the room (AKL savannah view) was $205 per night with the code, the discovery magic package comes with the UPH tickets and the CM gave me a $40 discount on the UPH tickets and some percentage on the discovery magic package...I can't find my notes on exactly what I figured the percentage to be but from what the WDW website was quoting and what we actually paid we saved over $1,000.
Not bad for $29.00 membership for DC! and I like getting the magazine and the flyers in the mail.
My parents are last minute planners...works OK for a quick trip to Southern California - but I'm trying to convince them that they need a little more thought and planning for a trip WDW. and from what I've read on the boards about spring break, I think they'd be better off going over the 4th of July!
I hope that help answer your question...the main thing is that if you don't like what the CM is telling you make some excuse like you have to talk it over with the SO and call back and hope you get Cissy or Cecelia!