How can I provide proof of location for my DTV visa application when staying with family?

Take a photo with geo location coordinates turned on and the time stamp showing

Dont over think it. I had a non o visa (no home address). I applied using my aunts address in which I just had some mail at her house to prove residence. Had no issues with Washington at all in regards to that.

Hi Mando, as an American citizen you may also show a valid driving license if you're unable to provide utility bills in your name.

Feel free to reach out to us for any other questions you have. We've successfully supported over 120 applicants through the DTV visa process with our cooking school so we're quite familiar with the process.

Driving licence or bank statement showing address is enough at this embassy

I used my driver's licence when I applied in Canada. I think the North American embassies are not very strict about this like the embassies near Thailand, especially when you are applying in your home country.

I made a document for this with boarding pass, hotel booking etc as I traveled but I also included selfie with the airport arrivals screen showing the date lol. And another photo where I swiped up showing my iPhone location as Bali and screenshotted it. Maybe you can take selfie and show date and location at the local bank or something where there's a screen showing time and date?