Bangkok used to have that rule a while back but changed. Now anyone can get a RC on any visa type.
Not many posts on here from people trying to use Nonthaburi so can’t confirm if they will allow or won’t. For many years i thought it was only Bangkok that had that stipulation.
stated you could get an RC from a nearby immigration office. You’d need a valid TM30 to do so for that province but stay a night in a hotel and get it from them.
It’s well documented in other posts on here that immigration seriously do not want to do extensions for a DTV. Although some have done so successfully I believe the hoops they had to jump through to do so will make them never want to do it again.