They are the spice to your dishes and the variety to your service, not to mention the profit you're gonna make!
Customers love getting various stuff from the vending machines such as soda, fruit juice or even energy drinks! And they rate your cafe according to how many filled vending machines you have.
The machines come completely full and customers consume the products in time. Once the vending machines are empty, you need to refill them. And hey, refilling is totally free!