Why do we do that? Catholic Traditions Explained

What is the Hispanic Advent custom of “Las Posadas”?

“Posada” is the Spanish word for inn or lodging. “Las Posadas” refers to a traditional Advent custom in preparation for the birth of Jesus, beginning on December 16. For nine successive evenings, groups reenact the search of Mary and Joseph for shelter in Bethlehem.
Two children dress as Mary and Joseph, sometimes with Mary riding on an actual donkey. They are usually accompanied by children dressed as angels and shepherds along with the Wise Men. Adults accompany them as they process to designated homes where they sing Christmas songs and request lodging. Part of the group enters the home and becomes the chorus that responds to the request for lodging. In the beginning the request is rebuffed. They move to several more homes where the ritual is repeated. Eventually, at the last home, their need is recognized, and they all enter the home where a party ensues. This is repeated in different neighborhoods and homes each of the nine days.
While this custom teaches children an important aspect of the Christmas story, it also emphasizes the need for hospitality to strangers and the continual need we all have to make room for Jesus in our “posada.” As we struggle to arrive at a fair and just immigration policy, it would be good to recall the fact that Mary, Joseph, and Jesus were also immigrants looking for a hospitable place to dwell.