I am 18 years of age, and I don't drink. When I started going out with my friends to town, I decided to stay on diet coke all night. I was presureised by all of my friends to drink, and was for about 6 months (the were very persistant). However, now they don't bother asking anymore and everyone is fine with the idea i don't want to drink. So i think consistently declining a drink everytime they ask will make them give up hope that your going to drink. I don't drink through personal choice (never have)- I'v seen too many people vomit lolYeah so presistance and being consistent is the key I think. p.s. Sorry about the spelling am dyslexic .