There is a "main monitor" on the set, which the characters use occasionally. We got everything we needed in-camera. Believe me, we got far more than any of us expected or asked for.
We wrapped this phase of production this morning at a little past 2:00 AM. I'm going to crash before daybreak and try to sleep through the morning and afternoon before meeting up with some other folks back at the stage to pack up lights and grip equipment for pickup and then go out to dinner.
Love your avatar, Nick. God bless and hope you have a safe trip home.