This is a very bad play by the playwright who did The Curious Savage. To be fair, he wrote Macbeth Did It 22 years later so maybe he got lucky or lost touch but they don't seem to be in the same solar system of one another.
Macbeth Did It is one of those classic giant comedies that has 15-20 characters but only like 4 matter. In this one, John Patrick didn't really know what he was doing and it feels like he threw this together and didn't bother to get it edited or write a second draft. It is a shockingly incompetent 'comedy' about a bunch of theatre people trying to put on Macbeth. I actually finished this one because of how shocked I was by the shoddy writing and plotting.
It also features Hispanic characters who talk liek dees and say hokay. Yeah I know it was 1972 but goddamn, good luck with that now.
Worth reading about how to not write a play.