@John ********
there are different categories of DTV's: 1) "Workcation" - for remote work, freelancers, digital nomads. Meaning you need to have your own business (and paperwork, portfolio, invoices, proof of tax payments etc) or be employed by a company outside Thailand, that confirms that you are allowed to work remotely etc. All work done while on workcation can not be Thai related, have Thai customers etc. 2) "Soft Power" - for things like attending longer courses (min. 6 month), related go Thai culture such as Muay Thai and Thai cooking. Soft power is also for Medical treatment over a longer period (needs appointments and treatment plan from hospital/clinic). It's also for attending some other cultural events - never seen anyone apply for those, but music festivals are mentioned in the initial visa information. 3) for dependants to a DTV-holder. For 1 and 2, I believe there's a minimum age of 20y and the applicant needs proof of having 500k in a personal bank account (not thai account). And the application fee is around 10k thb (varies depending on embassy/consulate).