If your invitation says “and Guest,” / "Acompañante" then yes, if not, we would prefer if it was just you.
The wedding invite will specify a time, 6:00 pm. That is the time that you should be arriving in order to participate in the catholic ceremony, which is scheduled at that time!
Men: Black tie optional / suit required Women: gown / long dress
The city: November in Santiago is probably the nicest all year round. We are warming up to summer, however nights can get somewhat chilly. We recommend light summer clothes for the day and something to cover up at night. The wedding: It should be very warm during the day but we suggest you bring something light to wear on top for the night.