Overseas Pre-Wedding

Overseas Pre-Wedding, literally translated as overseas before the wedding, but I think it is not referring to the overseas wedding or beach wedding before, although such a conjecture, nor any basis, and even in one of these twothat the gap between the two wedding is not generally large, is simply two mean, I really do not understand, can be inflicted so can not blame my English did not study well, should I not very good in English and Chinese translation, because translationnot only to understand the language, to understand life, customs, or would like this translated meaning is not understood.