On Again, Off Again, Lohengrin

S1 E1: The bickering Hubbards and Buells are stunned when their kids return from a night out announcing they're engaged. After arguments about the wedding plans are finally settled, the kids wind up eloping with another couple, while their parents are trying to rescue Kaye's beloved grand piano, set up in the Hubbards' back yard for the next morning's nuptials, from a midnight rain storm.