I am not in UAE, but I did most of my divorce online.
Actually divorce is the easy bit, its the property settlement and the child support that really hurts.
I am sure you could use a lawyer in Oz and do it all by phone and email.
Lawyers are all blood sucking scum anyway.
From my experience, if there are 2 kids give her 66 percent and get on with life. I think the standard equation is 50/50 and then allow 8 percent for each kid.
As far as the Child Support Agency CSA goes, just pay them, they have reciprocal rights to most countries, last time i looked not the UAE. But if you dont pay and you fly to Oz, you wont leave until you pay, you will be stopped at immigration. The CSA website has lots of info
Child Support Agency | Child Support Agency
I paid for 2 kids for over 5 years approx $2K /mth but it depends on income. I have never seen or heard from them in that time. the CSA dont care and wont help, they just want the money.
If you can make an agreement with the ex and just pay her direct, and keep the CSA out of it.
Life goes on, if you cant salvage the marriage, try to settle it out of court, otherwise youre lukin at maybe $75K each in legals.
Good Luck !