that I couldn't say, since the embassies consulates went to eVisa online it is very VERY hard to get someone on the phone to answer questions about a visa
many MANY small guest houses do not participate in the TM30 system even though they should by law. It's just a fact of life here in the glorious "Land 'O Thaiz"
People have had to go check in to a real hotel for a day to get a TM30 so they could apply for their extension
Yep not being married is gonna be the deal breaker, you could get the DTV's for the children but your "partner" is gonna hafta qualify for the DTV on their own