December is the month of preference for weddings in the DR, the most likely reason being because it is the time of the year when many people have time off and are in party mode. In contrast, the most popular month for weddings in the US is June. The National Statistics Office reports that 27,548 weddings were held from 2009-2013, of which 5,510 took place in December. There were 7,161 divorces during the same period.
http://www.diariolibre.com/noticias/2014/12/30/i947341_diciembre-mes-preferido-para-las-bodas-repblica-dominicana.html