As part of the International Festival of the Holidays, Epcot will be celebrating Las Posadas with new daily entertainment:

... Guests visiting the Mexico pavilion during the Epcot International Festival of the Holidays can also enjoy Las Posadas, featuring colorful dancers and performers from Mariachi Cobre celebrating the holiday customs of Mexico.
The 25 minute Las Posadas Celebration is currently being performed daily at 11:30 am, 12:30 pm, 1:15 pm, 2:30 pm, 4:00 pm & 5:00 pm.