This document discusses the importance of customer loyalty for generating revenue. It notes that 20% of customers account for 80% of revenue, and that it costs 5-6 times as much to acquire a new customer as it does to retain an existing loyal one. It then outlines various opportunities to increase loyalty and revenue such as advance parking, tours, commemorative tickets, food and beverage upgrades, and using current customers to promote the organization. The document stresses listening to customers and trying new approaches to provide value to both the customer and organization.