To address the one part that hexomino didn't already answer:
Why do you think I'm not able to enjoy the performance like everyone else?
My answer would be:
This is hinted at by the fact that
while acoustic observations (like everyone being quiet) are given, no optical impressions are, which is atypical for someone able to see. The fact that you are unsure about the location may also be a hint. And finally, I can't imagine any other reasonit explains why you didn't see the table.