This is the day.
I won't even attempt to play down the epicness of a wedding day in an effort to appear casual -- this is a big deal. You've spent valuable time and emotional energy arriving to this level of commitment with your favorite person, and the day is here to become a family and celebrate it for all to see.
That being said, traditional rules are always allowed to be a little bit bent and broken. Maybe you'll be surrounded by just a few close loved ones, or you'll have 200 of your nearest and dearest. Perhaps you're planning a 3 day party at a Boy Scout Camp or are flying 12 hours to an exotic destination.
Whatever you have in mind, I would be honored to be there every step of the way.