So my brother is getting married in about 7 months, and he recently told me he would like to invite me to his wedding as his "best woman", even though he (or his fiancee, for that matter) has no idea what a best man is supposed to be (he just know the bride and groom usually need one).But I've never been to a wedding before, much less being best man/woman for a wedding. So I was wondering what the position entails...are there things I need to do, other than attend the wedding? I wouldn't be able to get to the wedding until the day of the event, so even though I accepted his wedding invitation, I'm wondering if I should call back and decline the "best woman" role if I am required to do a lot of things pre-wedding.