Some haunt actors need some time to find themselves, mature, calm down and surprises will be pleasant when this is allowed to happen because then you will have a person helping you who has developed their craft and will be able to do more and more as time goes by...and how valuable is that!
The true value lies with customer satisfaction equalling repeat business...and maybe even needing a few fewer "bodies" to make the show run since they know how to do more and have the energy to learn more as time passes.
Good things require "Time" to happen.