I tell all my actors, "If you get punched/slapped, you were too close".
This past Friday was a full moon and it seemed like it too. My actor hadn't been punched all spring/summer then gets punched once and slapped later in the same day. With the customer that threw the punch intentionally (not a reaction to fear), we stopped the ride and escorted him out of the ride. I explained to him the rules as stated to him when boarding the car at the entrance and told him we have no tolerance for acts like this. Then I told him he was very lucky my actor didn't punch back as a normal reaction to being punched. But my actor stayed cool and heeded the rules of an actor. The girl slapped out of reaction.
But both times could have been avoided. If an actor gets punched/slapped, then yes, that person got in the customers personal space, which is the risk we all take in delivering the fear. You could almost call it a game of Hockey at times
Bryce, my actor has been with me since 2006 and is very effective, which increases the odds of getting smacked eventually. But then again, you just can't stand 10 feet away and say "Boo".
Thank goodness there is only one full moon a month (LOL).