This case study provides a detailed analysis of McDonald's operations management, focusing on capacity management strategies to reconcile capacity and demand. It examines the implementation of the four D's (volume, variety, variation, and visibility) within McDonald's restaurants, evaluating how the company adapts to challenges. The study identifies the five key performance objectives, including customer satisfaction, cost control, quality, speed, and technological advancements. Furthermore, it calculates the average number of consumers arriving at the drive-thru and the average waiting time, utilizing exponential distribution formulas. The analysis highlights the use of the Just-in-Time (JIT) approach and the impact of external factors like COVID-19 on McDonald's operations. The case study draws on academic sources to support its findings, offering a comprehensive overview of McDonald's operational strategies and performance metrics. The study concludes with the calculation of average consumer arrival and wait times using relevant formulas.