[foggy69]

If you put the car into Utility Mode (page 4.52 in the manual), you can run the AC off the traction battery, so there is no issue of running the 12v battery flat.

 

[foggy69]

If, as in the video iooi posted, that wouldn’t be needed would it? as the power for the A/C comes from the main battery with just a minor use of power from the main battery.
Or are you saying that having the A/C on when parked would flatten the 12v battery, unless it was put into Utility Mode?

Just use utility mode. Then you don't have to worry about the 12v battery at all.