On both the S/X and the 3, if they aren't driven for 24-48 hours, they go into a deep sleep that cuts back the vampire drain a lot. I would wager that the 3 would lose only around 1-1.5 miles per day once its in deep sleep.
The manual says 1% per day and warns to be sure you have enough charge if you park at the airport. It says nothing about a deep sleep mode. I hope you are right.
So with the latest update, the doors don’t unlock until the handle is pulled. As a result it seems I have to open a door in order to unplug the charging cord. Am I missing something?
Simply operating the handle should be sufficient. You should not need to actually open the door.
On another note, with the latest update, sometimes the car remembers that I was listening to the USB and resumes where I left off, and sometimes it forgets and I have to go all the way through the menus and select USB and pick an album and a track to start on. On the previous version is almost never remembered.
And another note, I've gotten into the habit of locking the door with the key card because I don't like walking away and hoping it actually locks. When I tried to lock the car from the passenger side, it did not lock. This happened on two separate occasions. I had to go around to the driver's side. Then I was able to lock it with the card. It can be unlocked from either side, but maybe it can be locked only from the driver's side?