In 2012, Harvard instituted new University-wide policy when it comes to drinking, in an effort to reduce dangerous drinking practices. So while there are parties on campus, the University is attempting to crack down on them, so tread lightly. Final clubs aren't necessarily mentioned in the policy, which is where a lot of partying occurs, in addition to the dorm parties that take place. Final clubs are typically for people who like to party or have the money to party in an expensive way.
However, aside from campus happenings, Harvard students still manage to spend plenty of time and money at local bars like Daedelus and Hong Kong. If the local bar scene does not sound appealing, just take the short T ride to Boston, and you will find a cornucopia of activities, ranging from bars and clubs to theaters and coffee shops. All in all, Boston and Cambridge provide Harvard students with more than enough nightlife opportunities to make most other college students jealous.