So sorry for the late reply! I never got a notification that someone had replied to my topic!
But yes, In the past that's how I've gotten celebrities Via movie sets, is send right to the production office, some films sets have more than one, depending on how many locations and states their filming, but most will pass along mail to the actors while on set, then it's up to the actors themselves if they want to reply to fans.
So sorry again for not replying sooner, did you end up trying that address??