Maybe they have different kinds of cards. I was sure my card had a sticker, but now when I checked, it doesn't. Last year's renewal was just a piece of paper that I had to keep with the card. It even says on the back of the card "Do not affix licence tags to this card"

But my card does have an expiry date ... on the front. Printed on the card in tiny white letters on the right hand side, starting at the gill on the fish drawing, it says "Expires Dec 31 / Expire le 31 dec". Under that, embossed in gold letters is a big "12", meaning my card expires at the end of 2012.

So check all of the small print, and consult your lawyer if necessary. Who knows what they would do if they caught you with an expired card, or one with stickers on the back that shouldn't be there ...