Q: What exactly is a best man supposed to do? My fiancé says his only responsibility is to organize the bachelor party.
A: While the bachelor party may be what your fiancé and his best man considers the most important task, there are indeed other duties he is expected to perform. As the maid of honor is to the bride, the best man is the groom's biggest source of support. Generally he's the groom's brother or best friend (the groom's father is another popular choice).
In addition to staging the bachelor party, the best man helps coordinate the groomsmen's formal-wear fitting, picks up the groom's attire, confirms the honeymoon travel reservations, and orchestrates the rehearsal-party toasts.
On the day of the wedding, the best man makes sure the groom gets to the ceremony site on time. He brings the bride's ring, holds the officiant's fee until after the ceremony, and signs the marriage license as the groom's witness. Afterwards, he organizes the groomsmen for formal pictures, dances with the maid of honor, and makes the initial toast during the reception. Finally, he makes sure that the getaway car is ready and the couple's luggage is inside. After the celebration, he sees that all rented formalwear is returned.