I was not aware of Red Dwarf (I'm not sure if I've even seen a single episode all the way through) doing multi-camera with pre-recorded VFX shots, but that's certainly reasonable (and from what I've read, I've always assumed that Happy Days pre-filmed the exterior shots, like Fonzie riding his motorcycle down the street [which would presumably have been shot as stock footage]).
And I suppose Night Court doesn't have that many more sets than Happy Days did.
The only tapings I've attended (other than cable LO and PA shoots in which I was actually doing some kind of work, either camera, or floor directing, or sound) have been game shows: a Hollywood Squares taping when I was just barely above the minimum age, and a Jeopardy! taping back when Trebek was still alive (and before the cancer diagnosis was made public). And I know that Jeopardy! had to have any insert footage used in the game pre-recorded, because the contestants had to be able to see it (and they also did all first-run national commercial insertion live, as I recall, and probably the L.A. Market too, subject to local override in other markets).
And I suppose Night Court doesn't have that many more sets than Happy Days did.
The only tapings I've attended (other than cable LO and PA shoots in which I was actually doing some kind of work, either camera, or floor directing, or sound) have been game shows: a Hollywood Squares taping when I was just barely above the minimum age, and a Jeopardy! taping back when Trebek was still alive (and before the cancer diagnosis was made public). And I know that Jeopardy! had to have any insert footage used in the game pre-recorded, because the contestants had to be able to see it (and they also did all first-run national commercial insertion live, as I recall, and probably the L.A. Market too, subject to local override in other markets).