20 years membership

EGrumps

My wife and I were pleased to receive our new membership cards last month, stating 20 years membership on them which was correct. We don't want something for nothing but it would of been nice to received a night site voucher as way of a thank you, if not
that what about a window sticker stating 20 years membership ( I've seen them on some peoples vans) what great advertising that would be for the club, and free to, or do I have to ring up and grovel for one.