What happens at a wedding anyway?!!

As I plan more and more for Mike and my upcoming wedding, I am starting to realize that I have never sat through an entire wedding/reception! I get as far as eating at wedding reception and then usually leave. What happens next? First dance, cake cutting, bouquet/garter toss? I think I have hit the wall in my planning progress and now must turn to the experts, married relatives! But will they remember after 25 years? My dad has a hard enough time remembering the date he got married! :)