Participant(e) anonyme I was able to apply for dependents at the same time as mine ( main holder) but usually you do your visa before and once approved the dependents. Good luck :-)
I would suggest to do it also for your kids not matter what their age is. I did it for my 2 and 5 years old. I dont want to have any issue when leaving and coming back into the country
You can bring your cat even on a tourist visa. You need to check regulation and vaccines to exit your country and to enter Thailand and fill the form online. When you land in Bangkok you pay a small tax for your cat( one time) and if you travel to samui after be careful there is requirements on the cage dimensions…
You can do DTV as a remote worker. There is a Facebook group for it. You have to apply on a Thai embassy and obviously outside Thailand. It’s gives you 5 years and you’ll have to leave the kingdom or make extension every 180 days.
They gave me hard time in Tel Aviv beginning of August although I had all documents as a remote worker. I ended doing it in Taipei which was a much better experience.