Not in Santa Fe :)

And on the weekends when the divas are not singing, you can see Khruangbin ...

At which opera house? In my student days the cheap seats at the back were very cheap and you could wear anything.

There is no dresscode at the opera.

Most operagoers are adults, but that's about it.

Opera houses in general aren't elitist or selective at all. You can turn up looking like shit no problem, I certainly have. They're just happy that people have come along to enjoy the music. So actually these places are many times more elitist and closed minded than your average opera house. Cringe.

Opera can be pretty cheap, actually. And you can show up dressed badly and wont be turned away. Some people will look at you sideways, but no one will tell you anything.