Do I have to take a new Thai cooking class every 180 days for the DTV visa, and is my Australian Super fund sufficient for the cash requirement?

The query pertains to whether a Thai cooking class, taken to qualify for the DTV visa, is a one-time requirement over the visa's five-year duration or if it needs to be repeated every 180 days. Additionally, it questions whether an accessible Australian Super fund balance suffices for the visa's cash requirements or if the funds must be in a traditional bank account.