After the POV meeting, give the house the silent treatment for the rest of the week until the live show; no wakeup calls, no DRs, and no voice telling them to stop that. The interior cameras would not move and the crew would have to be very quiet behind the walls.
During the rest of the week, have intermittent power outages and then play the sound of distant explosions and sirens.
I wonder what conspiracy theories the HGs would make up and would they try to escape.