1. Margarita
A margarita, when made right, is a great low-cal option. The recipe calls for tequila, lime juice, and a dash of agave syrup or Cointreau. You can ask the bartender to go extra light on the syrup or skip it altogether. Also, avoid any pre-made margarita mixes, which are often packed with sugar.
Check out our bar review: Skullduggery