hi there,
your post has some ideas in it that are straight from the so-called AV(addictivevoice/addicted voice) and it's lying to you:
it is a lie that someone might force you to drink.
it is a lie that not going to the wedding is not an option.
you so totally have that option, though you may not like the consequences of that choice.
i like the option of goingto the ceremony, having your own transportation if things get iffy for you, walking around with a nice glass of juice or sparkly soda in your hand so your hand isn't empty, hanging with others who are not drinking....giving this occasion your best and present self.