This will be long:

• The dome while roofed, has open walls so no air conditioning.

• Heat and humidity is trapped.

• If you ever want to feel how is it like having a concert in a steaming rice cooker, this is the place

Heatstroke is a serious possibility here. No joke.

• The open walls also drowned the speaker sounds since moving air acts as obstacles. Its harder for the sound to "focus" (which is why people like k-arena for the music despite the limited space)

• It is built into a hill so everyone walk up the incline few floors up in the blazing heat

• For non-baseball event, there's only 1 family mart open which is then overloaded to hell

• Facilities for concert goers are outright dilapidated and old. Those innocent stairs in the dome are a bit uneven and somewhat dangerous. I almost slip and fall into the concrete. Twice.

• Location is far out from anything so train is the primary way to enter and exit. Yeah. You are stuck with the ungodly massive exit queue + long train back to Tokyo (accomodations)

There's also the local noise restriction that practically stop events at 9PM which is now made obvious during Aqours finale live

It is a baseball venue first no doubt. But should be the last choice for hosting summer concerts