I think they've made it much harder and the "trick" is to say you have medicine that requires refrigeration, which I think is kinda crappy to lie about. Now most of Caesars properties removed the mini bar and put in a fridge but still.
I wouldn't mess with putting food in a mini bar. I know a friend that had to pay for every bottle their food touched since it messed with the sensors.
If I don't get a place with a fridge, I do the classic @CycloneDaddy method of just filling the sink with ice.
Is this a Vegas thing? I travel a lot and most of my rooms have a mini fridge. I never go to Vegas though. So I am guessing this is some sort of Vegas wants you to buy their food and drink so they take out the mini Fridge? Is that right?