If you send a wedding invitation to the President, you will receive a congratulatory letter from him and the First Lady. I don't care who the president will be when I get married, I have to remember to do this!
Fun idea for guests at weddings. Questions: Where do you see us in 25 years? What is the best marriage advice you've ever received? What is the most romantic place we should visit? What should we name our kids? --Guest book, just bind the answers into a book and keep it forever.