FWIW, I'm a straight cis woman who knew absolutely nothing about ball culture. To be honest, had never even heard of it, despite unknowingly having seen some elements through the occasional drag show and Madonna's Vogue.
But I was interested in the PAC production because of word of mouth (and I do have a nostalgic soft spot for the Cats score), so decided to watch Paris Is Burning before seeing it, and I am so glad I did. I'm sure I would've enjoyed the spectacle regardless, but learning what categories meant, and the inspiration behind the movement in vogueing, and the significance of the House of LaBeija (making it so special that Junior LaBeija is part of this), and even what "houses" were at all... it made an absolute difference in my appreciation of the show, and I loved it so much I ended up seeing it twice.
I almost wish Telecharge would send an email to ticket-buyers either telling them to watch the documentary, or with a mini-history and glossary, because I do agree that it's a world that a lot of Broadway-goers might know nothing about. Is any of that context in the Playbill, maybe? I'm bringing my 80-year-old parents to see it when they visit in a couple of weeks, and am making sure they watch Paris Is Burning before they do. They're fully open-minded and love the original score, so I'm confident they'll love it regardless, but I can't overstate what a difference it made actually understanding what I was watching.