On all ships or just Disney? On NCL, they reminded us to unplug or that the steward would unplug them. I’ve had stewards on Royal who have unplugged my chargers. As far as the outlets having electricity themselves, Even the coffee maker would not run without the key, it was in the same area where you would plug in hair tools or phones. I’m assuming the Breakaway is the same as the Getaway in that.I'm not completely sure that I want to get in the middle of this conversation, to be honest But our (awesome) stateroom host (Batania) did not unplug our chargers when we were out of the room.
I haven’t been on MSC or Carnival so I can’t speak for them. Again, I just find it a little surprising that Disney would be different...maybe the new ships will be different, maybe not.