Having been through that experience with a couple of other shows, I can say that it's not surreal. You know what's going on. What it is, is annoying as all hell. You end up in a state of dreadful anticipation, knowing that no matter how much you wish it they won't have got it out of their systems and it's only going to get worse at the evening goes on. It's intensely irritating to have someone shrieking at full volume a few seats away, trying to outdo everyone else in the delusional belief that others are going to be impressed with how much they love the show.
I know what it's like to love a show - there are twelve shows I've seen more than twenty times - but I also know that nobody wants me to spoil their enjoyment of the performance by trying to show off.