I received the same exact pin code too.
My mom and I are going for the Princess weekend in February. Staying for week. Elected the Standard room at POP and requested looking over the lagoon to AOA. We got the S/P/D discount, when it came out. Took off $195 from our total. Got the code and went in to see if I could get more off. Unfortunately, standard room wasn't available. Moving up to preferred would cost us $100 more. So, sticking with what I originally got.
Then, got another pin that is good for traveling in December. Can't use that one either. MASSIVE bummer.