Mini-ethnographic account

I chose to start studying the culture of Starbuck's coffee. For instance, why do most people look so "retro" and put together that go to Starbuck's? How do most that order know what all the language means? It's funny to go to the same Starbuck's at the same time everyday and see the same people, not employees, that are there. If you are a Starbuck's fan, do they go at the same time everyday, get the same drinks/food everyday. How many favorite drinks do the average Starbuck goers have?