We have been to Valparaiso and toured the city and then some of the wine country on the way to the airport in Santiago. We are arriving by ship again and will need to depart Santiago airport to BA for a 9PM flight out of BA. We will be off the ship about 9AM. Is it better to see the Del Mar area for a few hours or go to Santiago for the day since we have not toured there before? Can a guide in Valparaiso be our guide in Santiago if we do that?