It's actually not a card. It's a wall tile. The next village down the road were having a fair day, and this shop that let you paint crockery and stuff were making a tile mural. You could take a tile, decorate how you wanted, and then they're going to put them on the wall in the shop this week. We decided to make one to commemorate the day.
Thanks everyone for the kind words. We will, of course, provide you with a wedding list so you can buy us all lavish and expensive presents.