Opera buffs at GraphConnect?

Graph Connect will be my first time in NYC. My grandmother was a regular listener to the Texaco broadcasts from the Metropolitan Opera, and I would really enjoy seeing a performance at Lincoln Center while I am in town. Would anyone else like to go? They are performing Tosca on April 18, Maria Stuarda on April 19 (would have to miss the hackathon), Turandot on April 21, and Simon Boccanegra on April 22.