Hi Mike, No need for a duel.
Both the posts are correct. The Cat. 11 and 12 staterooms have fridges and the balcony staterooms have mini bars.
Now, what is the difference? The mini bars are fully stocked twice daily and have very little room for personal use. The fridges do have some product in them as well, but have room for personal use as a cabin amenity.
Personally have never asked a Steward to empty out their mini bar so I could use it. They have taken the soda out to give me some room.
This is my understanding, and I hope someone who has had both recently can elaborate more.
This looks like a learning opportunity.