Tesla2.0...I wasn't directing my last comment at your post (or at you). You asked a legitimate question and got some answers.
I have grown weary of people who excoriate anyone who provides an answer for any concern or a solution to work around a deficiency (particularly when there's any indication that it might be a common event)...which can be reassuring to someone who might be wondering "am I the only one?
His post was nothing more than yet another gripe from the "anvil chorus" that contributes nothing.
So the OP‘s question was super valid for anyone owning a Rivian. He showed extremely heavy ‘Vampire drain’ over 17 days when the R1S was not plugged in, in a sealed garage between 50dF-75dF iirc.
What would you expected that Vampire drain to be when parked at the airport for 17 days in 32dF weather? How many L2 chargers do you have at your local airport? A pathetic few, I’m sure.
Rivian has a severe problem with Vampire drain that they need to address.