I once worked at a car wash were most of the employees were out on work release. Anyway, the days were long and boring so I took the time to devise a way to get free sodas out of the vending machine. I was not interested in stealing soda, as I hated it, but only in figuring out how to do so. I eventually did so. I was so proud of myself that I decided to show one of the guys that I got along with pretty well. When I came back few days later the machine was completely empty and was never again able to provide tasty beverages for very long. Eventually the owner of the machine caught on and removed it from our site. I was very naive.
I once went to a conference that was held on an Arizona college campus during summer session. The school kept having soda and vending machines disappear periodically. It turned out that guys from the local tribe were taking the entire machines back to the reservation in their trucks, using them until they were empty, and then lugging them back to be refilled. I'm not sure what method they were using to get the soda out without paying, but they finally caught some of the guys using video cameras. I think it was all done more for the excitement than the soda...and also maybe to make a statement of some kind. (I can't imagine hauling one of those big machines around for the soda it would hold.)
Yeah, a similar story here. Pumping the lock with your finger would pop it out, which, after unscrewing the bolt, granted me access to a world of soda beverages.