I was in one where we were handcuffed all the the same wire. We had to sign a waiver, and the way the waiver was phrased mentioned there would be two people watching the cameras. I'm not sure if this was enough to make it legal, but it was my favorite escape room so far. It made it more like you were escaping.

The handcuff puzzle only took about 10 minutes and required everyone to actually work together (no quarterbacking).