That’s why we don’t wanna set the standard too high.
Well, [color=darkblue]I[/color] don’t want it, maybe GMs do, I’m not gonna speak for everyone.
Win lotto, research everything to the 'N’th degree, supply costumes, scripts to players, professional acting coaches & go for it.
But you may at that point, risk having created theatre & miss what you really wanted.
OR
Jareds rule for roleplaying/LARP: Try your best, have a good time, that is enough.