Your venue when you book, should give you a schedule of their regular updates of your wedding date. If you purchased a complete wedding package, these updates should include, when they order your flowers, your wedding cake, contact with the officiant, when to get your license, etc.
If you are in a foreign country, your venues wedding planner should also provide this schedule. You also must realize, that foreign countries operate on a different time schedule, siesta's, down times, lazy days, you must rely on them to contact you on their time schedules, not yours. It is imperative you find out what that time schedule is, ahead of time.