Not all wedding video's. All PAL material.
If it is PAL then it is 25fps, doesn't matter if it is a wedding video, home movies, DVD or whatever, it is 25fps.
PAL DVD's movies are generally from progressive film sources and are created by speeding the framerate up to 25fps. Wedding videos are generally shot on DV and are 50 fields per second.
Also Japan, The Philippines and South Korea are part of Asia and they use NTSC.