Kramer (Michael Richards) tells George (Jason Alexander) a sure way for Susan (Heidi Swedberg) to call off the wedding is by being asked to sign a prenup, this is an inside joke as Jerry Seinfeld's girlfriend Shoshanna Gruss called off their engagement after being asked to sign a prenup.
Up until the series finale, this was the last episode to feature Jerry's stand-up routines. This is because Jerry Seinfeld took over from Larry David as executive producer and head writer for seasons 8 and 9, and was too busy to come up with new stand-up material while simultaneously running the show.
When Jerry (Jerry Seinfeld) decides to propose to Jeannie (Janeane Garofalo), he does so after observing other happy couples on the pier- the exact same ones George (Jason Alexander) saw in the seventh season opener The Engagement (1995).
George M. Steinbrenner III filmed scenes for a guest appearance in this episode, but they were deleted. Steinbrenner's scenes involved him taking Elaine (Julia Louis-Dreyfus) out to dinner in anticipation of escorting her to George's (Jason Alexander) wedding.
Jeannie's comments about decaf and brunch are from Bania routines.