There's going to be some theft that way that didn't exist before, it's a decision of raw money versus CX improvement. The other issue we have is that we often stock the shops with volunteer groups or fundraisers or whatnot, and going to this sort of system reduces that need and the work they'd do.
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I've seen arenas now going to digital ordering panels like it's a Costco cafeteria. You order yourself on a tablet, pay right there, then go to the window when your order is called for pickup. No human interaction before picking up the order. This may be weird to do outdoors, I suppose, with the tech involved.
This is how it is at Casey's Center/Wells Fargo arena. Some people are so confused on how this works.