so i've unexpectedly been roped into going to some kind of operatic/symphonic gala dinner thing tonight. i have been told that the dress code is "festive cocktail". i identify as male. i dress super shabby all of the time. the only "nice" clothing i own is the suit i wore at my wedding. what does a fellow wear to be "festive cocktail" ? can i pull this off or should i stay home? there will be an open bar at this event. thanks