driver is good normally onky 5 or 6 people in 10 passenger van. Cambodia has stamp and handwritten "DTV". Totally legit, I did border bounces for the last 10 months through them and never any issue. Leave 5 am return around 2pm but stop for lunch/ coffee on way back.
Easy if you use a border run service - VIP Visa-Thai Driving License - 3900 for the van from pattaya and 2000 at the border. Otherwise everyone has different experiences so far. I'll take the easy way.
Baan Thai immigration solutions ... Use can agent for the extra 10k I highly recommend them, they did everything and told me what alternative docs or what the immigration officers are looking for so it's easy to know the first time. Better yet just do soft power and not have to worry about any work information ... Fight EVO360 Thailand - Thepprasit Boxing Stadium makes it easy.
You should go for soft power option, much easier and you won't have to worry about it. Fight EVO360 Thailand - Thepprasit Boxing Stadium great gym in Jomtien beach area has all the documents delivered same day, very knowledgeable about DTV and easy communication.
for Muay Thai, not sure for cooking ... Just in case. They have all the proper documents and sent same day, 6 months course is 20k baht. Not sure if your daughter will need to be enrolled in a course, possibly just the primary depending on age I expect. Anyway they are very familiar with DTV and good to work with.
I think you must notary in USA embassy and also marry again in thailand for ceremony and photos. But not sure ... Thailand should accept the marriage license from USA if it is certified by the USA embassy.
Anonymous participant you mentioned a UK business, at no point did you say you were actively working online. Many people being rejected for workcation if not actually working online with pay stubs and tax returns. Soft power much easier and don't need to show income, just money in the bank.