I know most concerts are geared toward adults and have adult vibes (alcohol, etc.) so I am not expecting to find much. I would like to know if any kind of music event, show, or anything of the sort exists in Vegas that kids can attend and actually enjoy. We plan on going in early November.
Ehh, I would say no. Most kids I know have no interest in concerts or music to the extent of actually wanting to go to a show. They tend to be loud and very crowded. I would say 12+ is a good age, anything 11 or under likely won't enjoy it, even if you manage to find a PG or kid-friendly show.
I believe Blue Man Group is playing in September sometime, and they are pretty safe for the kids to see. Motown Extreme might be a good option as well. As for others, not sure. There are probably a lot of shows playing throughout the year that are safe for kids to go to.
Also there is a Michael Jackson show that Cirque Du soleil does that might be worth taking the kids to.