I've noted various people on forums/discussions mention that some ships have a keycard lighting system for staterooms. Meaning (I assume) that a card must be inserted into a slot in the room for the lights to be operational. A few questions on that:
What ships in the RC fleet use this technology?
What kind of card are we talking about? (will an expired SeaPass Card suffice?)
Does this also include power to electrical outlets? (or are those always 'on'?)