What kind of activities do hispanic families do on "el dia de navidad" and "el dia de reyes"?

Personally I can talk about Puertorricans. We get together with family and friends, organize dinners and parties and exchange gifts. The most fun we have is doing the Parrandas. This are random or pre - schedule musical visits to family and friends and if the people doing the parrandas are real musicians even paid parrandas can be arrange. In the parrandas we have traditional foods and drinks plus live music, Christmas traditional music.  

Idont get it at all