No. It seems like the PIN codes are sent out very randomly based on what the computer system selects. It doesn't seem to be AP-specifc or non-AP specific, because the AP holders get their own special rates during the year. I remember a bunch of us here were trying to figure it out last year - the rhyme or reason behind who received them and who didn't - and it seemed like somehow or other, everyone who got them had made it onto a DLR mailing list of some kind (either from previously staying onsite through the WDTC, or from ordering the free Vacation DVD or from starting an online account on the DLR website, etc. - maybe). And sometimes the offers are e-mailed, while others are snail mailed. Even more confusing is that some of them have different cut-off dates, i.e., one person's PIN offer could extend to, let's say, October 2nd, while the next person's offer goes to October 5th! And one person's offer may say $149 for the PPH, and the next person's offer could say $169 for the PPH!!! It is really crazy!
For example, there was PIN code offer that floated around last year in the summer, and its dates extended to Fall. I used that for my PPH stay in October, before I got my AP. Then, as the PIN I had was about to expire in October, another PIN offer showed up in an email from Disney Destinations, I think, and it lasted from early October until mid-December. Then, at some point or another, DLR finally put up some discounted rates (for non-AP holders) on the Special Deals portion of their website, and those hotel rates were about $20 more than the ones advertised in my PIN offer, and they also extended to mid-December, but with a slightly different cut-off date.
So far this year, I have one PIN offer I am sitting on right now which lasts until September 30. I know others have gotten the same one. Prior to that, I had one that expired on May 30, which I could not use. I expect that there will be another PIN after the current one expires on 9/30, or maybe an overlapping PIN offer, and that next one would be the one that probably lasts up to mid-December - IF they do another PIN this year, that is. Last year, the offer drew so many people to DLR in October that the hotels were booking up faster than they did for December.