I went there yesterday, the 28th!!
As everyone said, the content was incredibly rich, and when I looked at the clock after watching, two hours had passed since I entered 😅
I visited after watching the final episode of season 3, but personally, I feel it was good that I went at this timing. I feel like I understood the comments from the staff and voice actors much better.
They were showing videos at the venue, but watching them on the panoramic big screen was a completely different experience.

I finally got to go to the hands-on exhibition. | アキバ販売員's post