The short answer for you is to disconnect the satellite antenna, that is the sharktooth antenna at the back of the roof. You could disconnect it at the antenna but that would involve dropping the headliner in the back, or disconnect it at the back of the head unit (radio). You will loose your satellite connection.
I believe the bluetooth antenna is also located in the head unit and that would involve removing the head unit, finding the bluetooth antenna and removing it. It might be a small circuit card that has both the bluetooth and wifi circuits on it. Just pull the card and you will never have to worry.
I have not done any of this nor can I verify this information but I suspect that is how it is done. I’m assuming that carmakers use off the shelf parts instead of custom made parts and these would be common parts to find.