Anyone who has ever planned a wedding can tell you that whittling down a guest list is not for the faint of heart. Between deciding on who gets plus-ones, whether to invite children, and which ...

NEW YORK—It’s a few minutes to showtime. The guests are all seated, the musicians are warming up. Behind the scenes is a frenzy. The groom is nervous, his face as white as his new shirt. A bridesmaid ...