It depends how old you are first... Take friends with you that your parents like and trust, maybe someone older and very responsible, but still fun! & prove to them that you are responsible and mature enough to handle the atmosphere. Maybe promise them you wont drink, or if you do you'll let your "responsible friend" drive. Just some ideas, hope they work for you! (:
Sometimes it is wise to trust that your parents are truly looking out for your best interests. In todays' world night clubs are scary places. Date rape drugs, guns, knives, gangs, thugs and GOD only knows what all else. Alcohol is very addictive as are many drugs that can be slipped into your drinks. They love you and do not want you to end up hurt or dead.