Im an Advocate in SA. You dont have to go through the RSL for an Advocate, there are other ESOs that provide Advocacy.
If you want to access your ADF records there is a simple form online that you complete and it takes 6-8 weeks to get them usually.
Now DVA offer Non Liability Health Care (NLHC) for any mental health and you only have to had served 1 day to get this. NLHC gets you a white card and is exactly how it sounds - NO LIABILITY. So it means that the ADF and the Govt are giving health care for mental health without taking responsibility or being liable.
You are only entitled to treatment and will receive no compensation.
You need to put in a full claim for the conditions to get liability and then get compensation.