14 Year Old Vending Machine Mogul Rejected 30M Buyout

Can anyone explain what prompted Six Flags to buy 100 of these, or what has everyone excited? First-aid vending machines aren't new, nor are these products that Six Flags doesn't currently sell. You can already buy some of this stuff at gift shops, and everything else is (and should be) handled by EMT on site.

Not saying this isn't a novel idea, just haven't wrapped my head around the business model that hasn't already been done before, so I feel like I'm missing something. Is it increased visibility in park leading to more sales? Ability to eliminate some EMT staff? Ability to charge people for supplies instead of giving them away?