Book excerpt: Where to Seat Aunt Edna lets those who've already made the mistakes and endured the big day disasters -- 634 of them -- explain the "we do's" and "we don'ts" involved in pulling off a dream wedding. From that fateful announcement of intentions, fixing the guest list, and choosing the bridesmaids' dresses, to writing the vows, figuring out those mind-numbing seating arrangements, and testing out the band to avoid any karaoke-ish embarrassments, there's not a wedding dilemma that hasn't been encountered, retold, and solved somewhere in this ideal engagement gift.