What a site survey actually catches
The problems that show up months after an installation are usually visible on day one: a power circuit shared with air conditioning, a network point at the wrong end of the room, a doorway that a queue will block. An hour spent surveying is cheaper than moving a machine that has already been anchored.
Why one stopped terminal is felt across the whole branch
When a terminal stops working, the transactions it handled move to the teller desk and to the machines that are still available. At high-traffic locations the effect is immediate: waiting times get longer, staff workload rises and the number of in-person queries grows. That is why restoration time is not only a technical metric but a direct factor in the day-to-day operation of the branch. It is one of the questions branches ask us most often: terminal out of service.
Where the queue forms is a design decision
People queue where the machine tells them to. Put a terminal too close to the entrance and the line runs out of the door; put it opposite the counter and it tangles with the teller queue. Deciding this before the anchor bolts go in costs nothing.