A few years ago I used to take the "seats" (you actually stand up) on the higher floor of the opera (Paris) and at the intermission I went in the orchestra and

A few years ago I used to take the "seats" (you actually stand up) on the higher floor of the opera (Paris) and at the intermission I went in the orchestra and took a free seat I spotted during the first part. I thought the median age wasn't as high as I expected it to be. And the median age was also slightly higher in the higher cheaper rows. (that's only anecdotal observation)