Earlier this month, I watched a virtual show that had a virtual cocktail hour before the show started. When you logged into the event, you were put into a virtual lobby, and you were randomly matched with one of the other attendees for a 5-minute audio chat. Once that 5 minutes ended, you were matched with another person, and so on until the end of the hour. It was very cool! I wonder if the sororities would do something along those lines for some of the rounds.
This was the site that hosted the event.