DH and I were married (both older as well, 2nd time round) last March and we had a very casual gathering for our friends. We used this picture that I found on the net (sorry can't remember where and I can't find a copy with a higher resolution)on our invitations (I can PM you a copy if you want) and we also took it to a cake place and had them blow it up bigger on our cake. I can show you the cake as well if you like. Happy wedding!