Serious caution should be exercised when considering the partaking of alcohol while camping, specially during wintery cold temperatures. Check out the following links for more detailed explanations than shown in the short quotes.
From the Discovery Channel's website .. http://www.discovery.com/tv-shows/mythbusters/mythbusters-database/alcohol-warms-up ... "Just one alcoholic drink could make you feel warmer, but it actually lowers your core body temperature.How does alcohol employ this rule of opposites? Alcohol may make your skin feel warm, but this apparent heat wave is deceptive. A nip or two actually causes your blood vessels to dilate, moving warm blood closer to the surface of your skin, making you feel warmer temporarily. At the same time, however, those same veins pumping blood closer to the skin's surface cause you to lose core body heat - the heat you need to survive, especially if you're stuck in a snowdrift . This effect could lead to fatal hypothermia."
And from the New York Times website .. http://www.nytimes.com/2008/01/01/health/01real.html?_r=0 ... "While alcohol may seem like the perfect cold-weather beverage because it creates a sensation of warmth, it actually decreases core body temperature — regardless of the temperature outside — and increases the risk of hypothermia."