Australian migration visa waiting times seem to be getting longer and longer and currently stand at anything between 6-8 months which is a massive amount of time to be away from your spouse or fiancee or even your children together, The Embassy fee is still very high at 96,000 Thai baht but does not sway the time you have to wait and having strong circumstances like Thai children together does not seem to make a difference to the Australian visa officials and decision makers.
So make sure that you are aware of the long wait and that your Thai partner also understands that it could be a long time before you are re united and allowed to live together in Australia.
No matter how you try to speed it up they just continue to take their time, a lot of money and a long wait.
With an Embassy fee so high I would definitely consider using the services of Key Visa Thailand to help you with the visa
