What's your plan to deal with monitoring and maintenance (cleaning)? I went to a robotic icee-style vending machine before, and while the robots happily perform

What's your plan to deal with monitoring and maintenance (cleaning)? I went to a robotic icee-style vending machine before, and while the robots happily performed their automated tasks, the end result was a puddle in a cup because something went wrong with the freezer portion. No one at the museum it was located in seemed interested in fixing or even calling someone about it, so instead it sat there costing money and brand rather than making it.