Short answer
Why AML applies to a Royal Reels Casino account at all
Casinos move money quickly and historically attracted bad actors looking to convert proceeds of crime into clean "winnings". International AML standards — driven by the FATF and implemented locally by AUSTRAC in Australia, the FCA in the UK, FinCEN in the US, and equivalent regulators — treat casinos as financial institutions for the purpose of customer due diligence (CDD), transaction monitoring, and suspicious-activity reporting.
For an Australian player at Royal Reels Casino, AML usually shows up in three places: an identity check (KYC), a payment-ownership check, and a source-of-funds (SoF) check on bigger deposits or winnings. None of these are personal — they are framework-driven and apply to every player at every operator that uses the same payment rails.
Where AUSTRAC sits
AUSTRAC, offshore licences, and the AU consumer side
AUSTRAC is the Australian Transaction Reports and Analysis Centre. It supervises AU-licensed gambling providers, AU banks and payment providers, and other "reporting entities" under the AML/CTF Act 2006. It does not licence offshore casinos. Royal Reels Casino appears to operate under an offshore licence; that means its primary AML obligations sit with its offshore licensing regime and its payment partners, not with AUSTRAC directly.
What does sit with AUSTRAC: your AU bank's reporting on transactions of A$10,000 or more (Threshold Transaction Reports) and on anything else that looks unusual (Suspicious Matter Reports). That is one reason a single large deposit or a sudden inbound from an offshore source can trigger a bank-side query, even when the operator side is clean. Plan for both sides.