I think Best Buy should offer a priority checkout line for RZ Premier Silver members - kind of like Airlines do for frequent fliers. In a weird way, that would actually encourage some customers to obtain that status just for that reason alone. You could go all out and brand the last register or first register with RZ premier silver branding on the front of the desk, signage about how to obtain it and benefits behind the desk and really use it as an area to highlight and really showcase the program. You could also make the carpet silver (kind of like the red carpets most airlines use for frequent fliers). Get creative with it.