Try running that past your employers security manager and see how they react.
Indeed. I recall the flaming hoops we had to jump through to show visitors around the maintenance hangars. There was even paperwork saying visitors should not go past the cockpit door.
There are rules (stupid or otherwise) written down somewhere, although the rules of different departments most likely don't agree with each other.
Whether you want to bend or break those rules, I guess, is up to you.