If you don't like something, change it. If you can't, change your attitude about it.
It's just a wedding. (Look at it that way) It's temporary & it will be over eventually. It's just this period of time & you'll be free then. If there's a special reason that you can't pull yourself away, then make a little sacrifice for it. Just be there & smile & stay calm in your skin & repeat it to yourself "It's temporary"