I know it's a JW tradition at worldly weddings to give the stupid Family Happiness book. I really don't know why it was given to us, since I told my mother that I have all the publications on the WT CDrom. I could read it if I wanted to.
I'm guessing it's a way to enforce it, or possibly convert my fiance, which is very doubtful from everything I've told her, and especially after she saw the Fifth Estate special.