7. Wrecking coasters, napkins, and straws
Many people will start toying with the coasters, straws or napkins while they wait for their drinks to be made. Others tend to nibble on the fruit from the garnish trays. It is important to remember that no bartender wants to clean up the mess you make. And the fruit from the trays is not meant for general consumption, it is for garnishing cocktails only. Snacking out of the garnish tray makes you look immature and even cheap. If you want to eat something, then order food from the menu.