I've done credit card booths. Straightforward reports though they did require I evaluate two different employees at shift change, to see if the booth was always staffed. The portion of the report for the second employee was cursory.
One time, employees never showed. I received full pay, and these shops are the highest paid airport shops were I live. I'll build a route in the airport only when I have a higher-than-normal paying shop, the same as I do with a route in the car.