If you dont' want to do the cutscenes, just don't queue for that roulette.

But if you're only queueing for it because the rewards are so good... the cutscenes/how long it takes is why they're so good!

Sorry, but you can't have it both ways.

P.S. It's also a lot faster than it used to be too, Praetorium only takes about 27 minutes now.