Final answer:
The number of crew members visible to customers depends on the establishment size, business model, customer expectations, and specific contexts such as peak hours or events. Large cruise ships require more visible crew for efficient service and safety. The visibility also adapts to customer flow, with adjustments made for consistent service.
Step-by-step explanation:
The number of crew members visible to customers at any given time can vary depending on specific factors such as the size of the establishment, the business model, and customer expectations. For large establishments, such as cruise ships that can accommodate up to 4,000 passengers, having a sufficient number of crew members visible ensures efficient service and safety. The visibility of crew members can also be influenced by peak hours or special events that require additional staff. For restaurants on campus, the amount of visible staff will depend not only on the number of seats available, but also on the activity of the students - whether they are there to eat, study, or both. It is essential to monitor customer arrivals, as mentioned - with one customer arriving every two minutes, and to adjust staffing accordingly, to ensure a reliable and swift service. This approach helps create an environment that prevents irresponsible actions due to anonymity, a concept applicable to group sizes where the minimum responsibility threshold is around 1,200 individuals.