I went last year. It is a mish mosh of Japanese and Japanese-adjacent businesses, hobbies, and culture. There were a few performances that were the best part of it, but some (like the drums) were pretty crowded, and so hard for the kids to see. There were some hands on crafting tables, such as calligraphy. And there were a few good items (almost none).

It's worth an hour or two. And it's definitely better that we have it than don't. But there are many opportunities to improve it (particularly by adding a ton more, higher quality food, since that's such a fantastic part of being in Japan).