I’ve actually been in the pyramid itself. It’s actually quite small inside compared to what you’d expect and is literally just a bass pro shop with a fish tank and a bar area with a bunch of tvs and nothing else. They do have comfortable seating though!
It actually works just fine if you change your user agent. BTW Snapchat likes to break support for Firefox or re-enable support all the time. Don’t know what their issue is but whatever.