Consider the comments of one father regarding his teen-age son. That was punishment enough because I had nothing. So I was bored out of my mind. But my son has his own color TV, phone, computer with Internet capabilities and a stereo with a CD player. One of the best things for teen-agers is to hold them accountable for their mistakes or poor choices, including decisions about alcohol.
Teenagers have needs for independence, separation, and decreased parental control.
But this doesn't mean no discipline. The key is to develop a system that incorporates the need for limits and accountability with the need for less control. A family contract can provide this balance. They view rules or contracts as restrictions upon their freedom. Clearly defined rules, limits and consequences allow teens to make informed behavior decisions.