What are the effects of alcohol consumption on fat loss?
One of the breakdown products of ethanol is acetate. Overview of ethanol metabolism
Presence of acetate in plasma reduces plasma level of free fatty acids 70-90%.
By reducing FFA you are in essence reducing the availability of fat to be used for energy. You will burn the glucose in the blood and the energy from the alcohol, not fat. Drinking often has been found toincrease abdominal obesity and negatively affect weight loss.
This doesn’t mean all hope is lost for a healthy lifestyle and alcohol though. Most of the problems occur when alcohol is consumed alongside unhealthy foods. (Where your body would normally metabolize the foods, the alcohol takes precedence and the foods essentially go to body fat). A good article and collection of sources on the matter can be found here.