I reaad about it in a bridal magazine today and I had to share... we want to do it!
I forgot exactly what it was called, but you take a bottle of your favorite wine and you put it in a box along with a note that you have written to your FI and he has written to you a week or so before the wedding. Then you seal the box and you open the wine and the notes on your fifth anniversary and then you do the same for your tenth!
I think it is a great idea and we are going to try to encorporate it into our ceremony. If not, we could always just do it on our own a week before the wedding. Either or... I love it!