Yea, alcohol is definitely not calorie free.
Also, watch for some of those mixed drinks, some of them have an obscene amount of calories and carbs.
Oh, mixed drinks I know all about.
I was actually surprised to look at a bottle of tonic water and see it is loaded with sugar. Shit. Made a pact to move to diet tonic and only diet tonic - though that's a terrible situation - either use real sugar, or artificial sweeteners that still fuck with the blood-glucose system. Barely any of the beverage industry has switched to zero-load sweeteners (come on corporations, switch to Stevia already you assholes).
Still trying to do some high-school level research into ethanol and it's calorie content - can't find all that much about it.
Ethanol has the second-highest calorie content per gram, behind only fats (fat 9, ethanol 7, protein 4, carb 4)... but why and how can't figure it out. Everything I've ever known, and the stuff I am currently looking at, all points to zero traces of ethanol being left in the body after the body goes through the multiple steps of metabolizing ethanol and pissing out the end products.
The metabolism of ethanol has both endothermic and exothermic reactions, but they are local reactions and not ones that provide cellular energy throughout the body.
There must be some kind of biochemistry that is at a super-crazy level of understanding that I just can't comprehend, because I'm not seeing anything that points to available energy.
edit:
Ah, figured it out. Acetyl-CoA is the last step of ethanol metabolism, and I don't care to regurgitate everything I just researched but, that little molecule is involved in, well... a lot of biological systems.