maybe this gives you a hint what your missing (i know this isnt 100% what your looking for but yet it can give you an impression what might be missing)
furthermore make completly sure that all the files you need for the map is implemented in the client and that your SVMAP isnt too big. Otherwise you will end up beeing in the darkness not knowing where you map actually is.
i see that you said you edited the map.ini but did you added a "Set Zone" and changed the map amount?
Im not quiet sure what you mean with making werdding map like cave stigma.
If you indeed mean that when you enter the map that just you and your party members appear then you mean making the wedding map to an instance like it is with OI therefore you can check the map.ini for the "Set Zone" set up for Oi and apply that to the wedding map aswell. Then it should be like that. If that isnt what your looking for then be a bit more specific in your explanation so we can help you out.