You could also actually go to a rave. It should be easier than setting up your VR environment.
With that said, not everyone lives in locations where these sort of parties are accessible, for some it's multiple hours away and not always doable. I'm happy both exists, but obviously, prefer in-person events myself any day of the week, and if people haven't experienced it before, they definitely should :)
By people I mean me, I'm sure some people are still doing it
The longest one I know runs for 6 days, Wednesday to Monday. Not everyone stays there the whole time. It's awesome. Although the more awesome one I know was Thursday night to Monday morning.
Do try to stay for the last night. At least here in Europe, the crowd who doesn't go home on Sunday night is the most interesting crowd.