Weekend Fun
The show would always film on a Friday. However, the producers and John did hold the audition for Jack’s fiancee on a Friday. Then Joyce said she came in the day before filming in order to set up her dressing room, which would then mean that the show tapes on Saturdays.
Casting
This one is just so odd but there is actually no mention of Lana (Ann Wedgeworth) or Larry (Richard Kline), even though there was an actor cast to portray Larry.