Cindy is 18 years old. cindy's parents and her 23-year old brother rich are going away for the weekend. renee, cindy's best friend, is pressuring her to throw a huge saturday night party for all their friends since no one will be home. renee even asked rich if he could pick up a few kegs for them. rich brought back two kegs of beer, a bottle of vodka, and a few bottles of wine, which he hid in the basement. renee also spread the word around school for everyone to show up. cindy now has over $100 worth of alcohol hid in the basement, an empty house for the weekend, and several friends expected to show. what should she do?

Either cancel the party or invite a small group of friends only.

Explanation:

Cindy is an adult, so in theory, she can throw any party she wants. But she still lives in her parents' house and this has to be taken into consideration, they have a reputation to lose if something goes wrong.

The best decision would be to change the arrangements for the party: instead of inviting random people  (which is crazy and dangerous given the amount of alcohol in house), she should invite only a group of trusted friends. This way the safety of them is guaranteed as they know each other. If it is too late to change anything because people are expecting the party to take place, she could cancel it due to a problem ( lack of parents' permission for example) or not let all the people into her house. If they insist, she should call the police.

Throwing a huge party with strangers is insane, they would get drunk, destroy the house, bother the neighbors and behave in improper manners.