I was accepted with a much worse IA than yours. However by the time I applied it had been 9 years since the incident. You need to be able to accept responsibility, sound like you’re sorry and articulate understanding of why your actions were inappropriate. The more time in between the IA and the present, the better. It’s also helpful to show adcoms you’re not a party animal, an entitled brat or emotionally unstable (or any other negative things adcoms might assume about you based on two alcohol/noise IAs) by taking positions of responsibility and contributing to your community.