Re: the appetite. If you can't eat, go pick up Boost drink at your grocery. It's in the supplements section.
My doc told me that if I drank two of those a day, my body could live off of that stuff for weeks! The chocolate one tastes pretty good too.
My appetite came back (WITH A VENGANCE!) after about five or six days. I was a heavy beer drinker, and everyone is different based on their body, what they drank, quantity, and frequency.
Keep your body loaded with vitamins, water, and protein as much as possible (Boost is very high protein). Stay away from sweets, even pastries and cookies. Those will really screw with your blood sugar, and can be dangerous.
Your body will tell you what to eat and when, if you pay attention to it. It's funny that way. Just ignore the part of your body that tells you it wants booze. That's part of the deal, and you can read about it in "Under the Influence, A Guide to the Myths and Realities of Alcoholism."