Like the other poster said, the codes/pins now are only good for the next couple of months. Wait until you hear about new codes/pins being used for your dates before bothering to call. This might be in late Aug./Sept.
I went ahead and booked a AAA rate at AKL for Nov. just to be sure we would have a room since they seem to release codes so late now - if you wait on a code to book, then your airfare will probably be too high - this way, I have a rate I can live with (even though I think it is too much and I don't want to pay it), I can get the low airfares when they are offered for my dates, and maybe I'll luck up on a code/pin for the hotel closer to the trip as well.