The "drink at the casino bar until 7:30 PM" ticket strategy: Does it still actually work for the big residencies?

A few years ago, my absolute favorite Vegas cheat code was just ignoring the advance sales completely. If there was a sold-out show I wanted to see, my friends and I would just go get an overpriced drink at a casino bar near the venue around 7:00 PM.

Instead of dealing with the box office or those half-price kiosks on the Strip (which feel like a total ripoff lately with the hidden fees), we would just play the waiting game.

I’d sit there with a drink, cycling through apps on my phone - usually rotating between StubHub, Vivid Seats, StarTickets, and SeatGeek - just watching the secondary market crash in real-time. By 7:30 PM, the brokers would panic because the show was about to start, and you could literally watch a $400 ticket drop to like $90. We'd buy them, finish our drinks, and walk right in.

I'm heading back next month and wondering if this is still a viable strategy for the newer venues like the Sphere or the mega-residencies, or if the brokers have figured out a way to artificially hold the price floors until showtime now?

Are any locals or frequent visitors still pulling off this last-minute bar trick, or is the golden era of the 7:30 PM price crash dead?