Yikes! I'm getting old. I remember watching this [1] when it first aired, and, except for the cartoon segment [2], didn't find it all that interesting. It certainly didn't help that it centered on Chewbacca's family (an hour or grunts and growls) and no subtitles what-so-ever. That's a very odd choice, but it's not like it's the only odd thing in the special—you have a Wookie getting off on soft-core porn (seriously!), Bea Arthur singing, Harvey Korman attempting comedy, Carie Fisher attempting to sing to the main Star Wars theme (who knew it has lyrics?) while wasted, Mark Hamill wearing makeup, and Harrison Ford wantint to be anywhere else than this special.
You would think this would be entertaining, but no, it's not. You can attempt to watch it [3], but I'd recommend watching an angry review of it [4] (or any number of other reviews of it [5] as it's more entertaining than the actual special itself.
[1] https://en.wikipedia.org/wiki/Star_Wars_Holiday_Special
[2] https://en.wikipedia.org/wiki/Star_Wars_Holiday_Special#Cartoon
[3] https://www.youtube.com/watch?v=KxtSX1lg8rE
[4] https://www.youtube.com/watch?v=TgJO59eu6lQ
[5] https://duckduckgo.com/?t=ftsa&q=angry+review+star+wars+holiday+special&iax=videos&ia=videos