Sisters of War

I have already put my view about this movie some time ago but somehow I became interested to find out the real location where filming took place. It is said that filming location was at Mt. Tamborine in Gold Coast of Queensland but where exactly no one knows. I say no one knows because I found the facebook address of more than dozen of those people who played in this movie and sent them messages asking them where the exact location was. Only two people responded who said it was around Mt. tamborine. When I asked them where exactly or if they could pinpoint the location they both dodged away and did not respond.Something fishy about this matter ? The problem is here if you have watched the movie at least twice : The small harbor where Japs' navy ships are seen to be sending their soldiers to invade the missionary compound is not near Mt. Tamborine at all. You can not see a small lake or harbor anywhere near Mt. Tamborine where navy ships were seen in the movie.Even this small harbor--which seems to be a part of an ocean nearby-- is not near Gold Coast area. So where is that harbor ? Somewhere in Japan or Rebaul ? Anybody can comment ?