Yes that's what I did, and you're spot on RE "technical stuff" as that is literally what most people called it lol! Technically I was in charge of AV (audio visual), so my area was responsible for providing the technical set up for theatres, "main events" hall, secondary stages, ad hoc PA (public address, so portable microphone and speakers), camera work, lighting, sound and vision mixing (for live streaming as well)..
All I wanted to do was run my Children's Area, but I never did get to install my replacement AV head so I could focus on that, ah well.
Yes, you've got the right of it - when it's something relevant to your job (or background), you tend to notice it wherever you go.