Big-Lipped Alligator Moment: "An Old-Fashioned Wedding". It features a verse from Frank about his ideal wedding, followed by a verse from Annie about her ideal wedding, and then a Counterpoint Duet of the two verses together. The problem is that Annie's ideal wedding, with photographers, reporters, champagne, and caviar, is completely out of character for Annie. The song is then followed immediately by this dialogue and never mentioned again.
Frank: What do you say we compromise?
Annie: What kind of compromise?
Frank: We'll do it my way.
This song wasn't part of the original production, but added for the 1966 revival – its tacked-on status shows.