[Eru]

If you're saying what I think you're saying, you're worried about people coming to the casino to jump out at people who are coming in or waiting around outside.

1) Don't stand around outside advertising your presence.
2) There's a 3 second timer to get out OR into the casino. So, if you're entering, the other person would have to get on the exit pad before you stepped on the entry pad. Well before.