The show has real Late Late Breakfast Show vibes. An 80’s BBC show where the public took part in more and more over the top stunts. In the end someone died and the show was cancelled 3 days later.
https://www.everything80spodcast.com/the-late-late-breakfast-show-tragedy-of-1986/
All hotels reserve the right to inspect your room whenever they need to. The privacy sign just means you don’t want room service, it’s not some magical lock.
They’d still knock, not just burst into your room to catch you in flagrante.
That said seeing the black hat conference in this way is daft.