Really depends on the venue. Some music venues have outstanding sound, others not so much. Also depends on where your seats are. I've been in the 3rd row and the sound is so-so. Next night a few rows back and the stereo and definition of the instruments was much better. I always have good sound at home, assuming the recording is a good one.
How much “suspension of disbelief do you need?”
We (or most of us) believe that it’s very difficult if not impossible to hear an exact representation of the the sound of a live performance on a recording.
The question is how much do you have to delude yourself into thinking it’s the real thing your listening to, to satisfy yourself.
To some it has to to be as close as possible. But others can make allowances for defects in the sound in order to enjoy the presentation.
‘How much do you need?