I booked in Dec with the 40% off code. I was able to get AKL CL and BWI for the latter half of our stay, Oct 18-26th. I wanted the YC but it was still completely booked with the code discount.
I have been trying since then to switch from the BWI to the YC with the code but no luck at all.
I did just call to add on another night at the ASMO (we will drive up after work on the 17th) and there are still rooms available with the AP discount but they are values and mods.