What is the current requirement for the DTV visa regarding Muay Thai course duration?

There is conflicting information about the required duration of a Muay Thai course for the DTV visa, with some stating it needs to be a 9-month course while others believe 6 months is acceptable. Community members are sharing their experiences with the application process, suggesting that the situation may have become stricter or longer recently. Various comments indicate that proving accommodation and applying for dependent visas may have different procedures.