So I put my money in the drink machine and hit the coin return. Nothing happened. I tried a few times and figured the coin return was broken or that it was out of coins. The only thing in the machine was soda, which I can't drink if I don't want to trigger my acid reflux. But I bought one anyway since otherwise my money was "wasted", thinking I'd give the soda to a friend later.

Of course, once I bought the soda, the machine spat out all my change: 3 quarters and 2 dollar coins - now I finally had coins that I could buy food with. Naturally, the food machine didn't accept dollar coins. Most machines here don't, so no food for me.