I called last night and a strange thing happened. I dialed 407-W-Disney and got the automated menu, then finally got a live body (her name was India).
I told her I wanted to make a reservation and she started going through the questions...name, zip code, etc. When I mentioned I wanted to use a code, she became somewhat flustered, put me on hold, then I was transferred to Brenda, who completed the transaction and was very friendly and knowledgable (asked me what floor I wanted, what building, what view, compared different prices, etc.).
Now I am wondering if perhaps I had WDWTC at first, and they switched me back to CRO because of the code? My confirmation number has 12 digits and I have the 5 day cancellation policy, so I know I ended up with CRO.