Did they avoid peacock feathers onstage?

Reciting lines from The Two Gentlemen of Verona and A Midsummer Night's Dream is also rumored to be helpful (from the last section).

"For the more athletically inclined, one should exit the theatre, spin around in a circle three times, and spit."

https://broadwaydirect.com/13-theater-superstitions-hallowee...

Nope. They don't really follow most superstitions. But most didn't end up with half a cast injured.