Before the final scene was filmed, Clare Grogan was accidentally told she had finished her scenes and left the studio, so the Kochanski who walks in with the future Lister is actually Dona DiStefano, an Assistant Floor Manager (in a very big hat) and Clare's lines were excised from the final shooting.
In the original version of this episode, during Holly's opening spiel he says "we saw a moon shaped exactly like Felicity Kendal's bottom". In the Remastered version it is changed to "Marilyn Monroe's bottom", as Felicity Kendal won, in 1981, in the United Kingdom, Rear Of The Year, which may have been the reference to the crew flying around her moon-shaped bottom several times.
We learn that Red Dwarf has at least 2,500 decks, and it takes long enough for a lift to descend to Level 16 that it's treated similar to an airline flight, with an in-service meal, a showing of Gone with the Wind (1939), and cyanide pills to take if the lift fails, which will result in certain death. Having so many levels makes it impractical for the ship to have only 169 crew members (per earlier episodes); later, the crew count will be recloned and increased tenfold to 1,169 in the Series IV episode Justice (1991).
The scenes in the Ganymede Holiday Inn were filmed at the real-life Midland Holiday Inn, with actual hotel guests shown in the foyer, and the confrontation scene being filmed in the real Room 008.
This is the final ever appearance of Lister's best friend Olaf Petersen, although Petersen is heavily mentioned in later series, especially Series VII, Series VIII, and Series X.