Final answer:
Kevin should focus on ensuring adequate seating facilities and dinner plates, and he may also consider adding an ethnic flavor to the event's menu, depending on the client's preferences.
Step-by-step explanation:
When Kevin is planning to serve plated meals for his customer's guests, he should particularly consider three key factors. First, adequate seating facilities are essential to ensure that each guest has a comfortable place to sit and enjoy their meal. Second, he needs to ensure there are adequate dinner plates available for the service, corresponding to the number of guests that will be attending. Third, depending on the preferences of the client and the theme of the event, Kevin might want to consider adding an ethnic flavor to the event, which could influence the menu and presentation. It's important to note that while not explicitly mentioned, other logistical factors, such as the number of catering vans needed, may also be important but are not the primary concern in the context of serving plated meals.