We checked into BCV on 12/23 and we received a pin.
It is the same pin we received on the Member Cruise. It was attached to the card with an invitation to the Merry Mixer. The last Mixer was the Thursday after Christmas. I know a friend that checked into BCV on Dec 30 and they received the pin too.
We checked into SSR on Dec 29 and did not receive the pin.
If there were only 7500 pins made and they gave away approx. 2,500 on the Member Cruise, that meant that there were only 5,000 left. They divided those among 5 DVC resorts (No reports from HHI or VB yet) so that is 1,000 per DVC. All the resorts were sold out, so I could see where VWL and BCV's pins would have lasted a little longer than SSR and OKW.
And I did see them for sale too, so some places may not have received a full allotment. Since the Mixer and the Member Update are held in the Epcot resort area, maybe they received more pins to pass out at checkin.