Your bartender should be an expert in all things alcohol—from the best tequila to local craft beers and unique cocktails. Stroke your bartender's ego by taking advantage of their knowledge. This helps to build a level of respect both ways: they respect you for asking those questions, and you’ll respect them when they give you the answers you’re looking for. Note: don't ask your bartender to tell you about the history of agave tequila if the bar is packed. Ask questions when the bartender has the bandwidth to provide a thoughtful response.