Can you go to a wedding if a Catholic marries outside the Church without the bishop's permission?

Jesus: "Do you think that I have come to establish peace on the earth? No, I tell you, but rather division.  From now on a household of five will be divided, three against two and two against three; a father will be divided against his son and a son against his father, a mother against her daughter and a daughter against her mother, a mother-in-law against her daughter-in-law and a daughter-in-law against her mother-in-law.” (Luke 12:51-53)