Something like this would be cool. Though perhaps before jumping right into a 48-72 hour op perhaps first do a non-stop 24 hour one. That way it's still long that the stress and tiredness factor will kick in but short enough that the organizers can get a really good idea of the logistical needs for a longer running game as well.
If I was banging all of them, I'd be a manwhore. At the moment, I'm just an opportunist.