Richie and Lori Beth's son, Richie Jr., is not present at the wedding.
Howard mentions his and Marion's two children but seems to forget about their firstborn, Chuck.
Howard: Well, what can I say? Both of our children are married now, and they're starting out to build lives of their own. And I guess when you reach a milestone like this, you have to reflect back on... on what you've done, on what you've accomplished. Marion and I have not climbed Mount Everest or written the great American novel, but we've had the joy of raising two wonderful kids and watching them and their friends grow up into loving adults. And now, we're gonna have the pleasure of watching them pass that love onto their children, and I guess no man or woman could ask for anything more. So, thank you all for being part of our family. To happy days.
-Last lines of the series.
Roger: I got Joanie and Chachi the most wonderful wedding present: the full set of Encyclopedia Americana. It's the official source for Jeopardy! What'd you get them?
Fonzie: A car.
Roger: A car is not a window to knowledge.
Donny Most was not asked to be a part of this episode.
Tom Bosley breaks the fourth wall during his toast, looking directly into the camera when he says, "So, thank you all for being part of our family." In doing so, he thanked the show's viewers in the guise of thanking the guests at the reception.
Anson Williams does not appear in this episode.
There is an outtake from the final scene in which Tom Bosley completes the toast and looks around saying "Chuck!?! Where's Chuck?" It was featured on Entertainment Tonight's coverage of the filming of the episode, which was, in turn, recycled for the "Entertainment Tonight in TV Land: Happy Days" special.
Kevin Rodney Sullivan is credited as "Kevin Sullivan."
This two-parter was intended to be the series finale.