Teens love to do something they think they can get away with. Kids who drink do worry about driving. There are designated drivers. If they're too drunk, some will spend the night at a friend's house and not come home. Some think they are better drivers.
Kids definitely use designated drivers.
In other kids' houses when their parents aren't home. Some do it at an older friend's house. Some parents might even buy it for them. Their parents have told them it's wrong. If you're drinking, you might be caught by the police.