Does it matter?
Realistic on what level? As a character or do you get to blurr the line and seem to be a real person, thereby being even scarier when you get mentally off-center?
Do customers ever ask you or other actors if you have ever been trained as an "actor"?
Do you get enough time in your haunted venue to act the way that you would want to act, as far as time or the best situational opportunitys?