Welcome to Mexico where we love to celebrate and do so with the very best food, drinks and dance parties. Maratón Guadalupe-Reyes is a phrase often used in Mexico to describe the month-long parade of holiday parties and festivities. From the lighting of the trees through to the lengthy celebration of Las Posadas, you will get your fill of the frequent fiestas, which take place in Vallarta from December 12 through to January 6.