I stayed at RPR August 2004 and it would have been a $15 charge for a refrigerator when I asked.
They did not offer me a mini bar key when I checked in, got to our room discovered their was a mini bar, and decided to ask for the key.
I had medicine with us that needed to be refrigerated, just a couple of vials. I had just planned on keeping it on ice, but when I discovered the mini bar, I thought it would be good to be safe.
When I went to get the key, the desk clerk was snooty and informed me you were not allowed to 'empty' the fridge and fees may apply. I asked her what made her think I would not want to buy something from the mini bar, and she sighed and gave me the key.