Questioins about VR concerts

I watched a few VR concerts on Meta Horizon and they are great!

The concerts have a limited period we can watch. Are they going to return sometime or any change to watch again in the future? 

Also, once we join a Meta Horizon Concert and walk into the "first row" to activate the 3D, sometimes the 3D turns out suddenly, even if we didn't even move. Is there any specific reason?