I asked Jetstar what their policy was about onboard d/free from Bali.
Here is their response for anyone interested...sounds abit hit or miss
"For flights to Australia, all liquids, aerosols and gels, with the exception of duty free, will be restricted to 100ml containers contained within a one litre liquids, aerosols and gels bag. When the items are duty free, passengers may be able to purchase these items once they have gone through security screening at the international airport, depending on the local restrictions in place at the time of travel. There may sometimes be additional security screening points set up by international airport authorities at the boarding gate who may not allow these items on board. Unfortunately, this isn't something we can control as we must adhere to all travel regulations imposed by that country." Thanks - Jetstar