The Washington National Opera (WNO) opened its 2018-2019 season with a new production of Giuseppe Verdi’s ever-popular and moving romantic opera, La traviata. Up until the opening night, my familiarity with La traviata was pretty much restricted to what I saw in the highly emotive scene of the famous 1990 Hollywood blockbuster romantic comedy, Pretty Woman, when Julia Roberts’ character Vivian goes to the opera for the first time, and is so touched by Verdi’s La traviata, that she is moved to tears.