I haven't unloaded them yet, so no update on the PIN.
They were located near the checkout line that sells cigarettes. They were near the conveyor belt. This could obviously vary depending on your store, but I would not be surprised if it is the same because they all follow a "Plan-A-Gram" sent by corporate.
Here's a pic:
http://imgur.com/WLqfHOo
The fathers day cards are on the upper left hand corner of the pic. The OneVanilla MasterCards are on the upper right.