SAS,
They didn't do night scene calls. They were not asked and they didn't want to. I think the boys at STARS in Calgary get out at night. As for the rule differences. I don't thing the FAA/TC laws vary all that much. I am not certain thou...
I wouldn't mind doing night scene work with decent lighting and an autopilot but it is hugely risky. I wouldn't like to be the Captain in the non-flying seat of the 76 and having to deal with the lack of view.
With someone you trust it might be a different story.
My next effort in this line of work will have to be single pilot, 3+ axis autopilot, NVFR and IFR. Better a reliable autopilot than an incompetent copilot.
........but then again I am a demanding b@rstard.