8-18 drinks... sounds like college.
It's amazing how many college punks (I was included in this) who just couldn't do a couple casual beers, and then be done with it.
Instead it's ALL or NOTHIN, which is the reason we've been seeing more teen deaths/hospitalizations in the last few years. Teens follow the examples of those who've tread on the path before them.
Alright, here's to some advice:
if you're worried about calories, you have 2 options, eat less that day, or drink less that night. There's really no other way to manage it.
Alcohol will SLOW your progess down a LOT. There's a reason college girls put on 15 pounds their first year, and it's not just the ice cream in the dorms. it's also BOOZE and a lower activity level. Many people you see walking around campus probably played a sport or two in highschool, without that, now their metabolism slows a little, and then BOOM! they start slabbin on fat.
The best way to minimize the damage from booze is to minimize consumption. I've found it amazing what going a few weeks "off" can do to a person's tolerance. Back in school I was at the point where I could go out and have 6 or 7 beers and not feel any buzz, this was when I became worried about my health. I then quit drinking for 3 WHOLE Weeks (I know, this is a really short amount of time, but for a college kid surrounded by bars and parties, it's a liftime).
I came out of the 3 week sober-binge and lo and behold, I could get a buzz off of two beers, and I didn't have the need to get "smashed" anymore because I had seen first hand how STUPID people acted at bars and parties when they were shit-faced.
Evaluate your life and your health. Eventually binge drinking is going to catch up to you in a negative way, and it'll be up to you to decide how to positively influence your OWN life.
as my parents always told me
"Have fun, but don't be stupid."
don't be stupid.