Make your presence known. Try to avoid retiring to another part of the house. Walk through the party area frequently. Should someone come who is not invited, ask him or her to leave immediately. If you have a problem with uninvited guests, call the police, they will assist you.
Some parents provide alcohol to minors at parties or fail to see the truth that alcohol use occurs.
Falls and hurts themselves or someone else. Sexually assaults someone. Dies from drinking too much. Injures or kills someone while driving after leaving the party. You may also face criminal charges of contributing to the delinquency of a minor.