At the very basic level, great customer service comes down to being a great human being. Visitors and residents alike in Mammoth Lakes are looking for good quality products (food, lodging, shopping, etc.) and friendly faces while they're out and about. For visitors in particular, being knowledgeable about the area is key. The best way to get up to speed (the best reference to have on hand) is the Mammoth Lakes visitor guide. This guide has everything from restaurants to churches and childcare options to bus schedules.