Which factor is least likely to influence in-flight service quality?

Weather conditions are least likely to influence in-flight service quality because they typically impact operational aspects of the flight, such as delays or turbulence, rather than the actual service delivered onboard. In-flight service quality is heavily influenced by factors such as cabin crew training, which ensures that the crew is equipped with the necessary skills to cater to passenger needs effectively. The variety of the in-flight menu directly affects the dining experience, an essential aspect of service quality. Additionally, passenger wait times during boarding can significantly impact customer satisfaction, as extended waits may lead to frustration. In contrast, while weather can create challenging conditions, it does not affect how service is rendered once the flight is underway.