but part of the requirements involve working for a company that has a high turnover requirement on top of the applicants high income requirement. Certainly not your typical digital nomad
One word of warning. You are meant to remain in the location you apply from until the visa process is complete. The Royal Thai Embassy, London reserves the right to request additional documents / interview in person at the Royal Thai Embassy, London, and amend visa categories as deemed necessary as well as reject any application without prejudice.
You aren't going to be on a tourist visa, you won't be on any visa, you are entering visa exempt. If you work in that period you will be doing so illegally, while it's unlikely to affect your DTV application you just can't tell. Why don't you just apply for the DTV before you travel then you will have no worries.
Some immigration offices won't accept joint accounts, those that do want to see double the money in the account as they take the view that only half belongs to you
bet you a pound to a dollar they won't do anything with your DTV, they are far more likely to tell you to return to wherever stamped you in to get the stamp corrected. What they may do is stamp an acknowledgement of your old passport in your new passport but you still need to carry both anyway.
just because you're paranoid doesn't mean there not out to get you.... Just a wee quote, not a reflection on your situation. But seriously I don't see you have any other options except perhaps returning to the airport and asking immigration to correct the stamp