Is it a kid friendly event for a 8 year old who doesn't know any YouTubers? Like we he have fun seeing all the maker stuff?

I took my 7 and 6 year old and they loved it! We spent all our time looking at projects and booths. They have no interest in the talks. With that said, there are not that many kids below highschool age that were in attendance. It is more geared to older kids/adults. But I do think there are lots of things to see there for kids. Probably the higher entrance fee reduces this a bit as well.

With that said, you want to pay close attention to your small children, as some of the exhibits are not super kid safe. But that is part of the fun!

There is a lot of variability in what you see as well. Some tables have incredible cutting edge projects, and other are exciting for a highschooler. Some are amazing highschool/middle school projects that the builders are really passionate about, but might not wow you technically.

Every year I find an amazing creator there, where I bring in their work to our house for the family to build/play with. Last year we found https://www.trackstacker.net/ which has provided hours of fun over the last 12 months. And this year we found https://professorboots.com 3d printed construction equipment.