Barry Williams who plays singer Miki Winner is a singer in real life and has released multiple soundtracks as part of the Brady Bunch.
Camp Goodtimes is also a real life Canadian organization devoted to helping kids with Cancer. However the camp started in 1985 after this episode aired and no connection to the episode.
A similar camp called Hole in The Wall Gang was founded by actor Paul Newman in 1988 in Ashford CT. As of 2023 there are 28 of their camps.