I understand there is still no rhyme or reason to getting a PIN code but I have had reservations for about 1 month. Then when the GP discount came out I was depressed. We are going March 14th-22nd. I then read someone talking about saving an offer then receiving a PIN that extended til march 24th, so I figured why not. I did and about a day later I received a PIN in my email. I adjusted reservations tonight and booked Riverside Royal Room and saved about $700. Good Luck to others.