Haha just stating facts, Thais will happily cheat Thais when it comes to cars and money so farang have got no chance. And yes I live in Thailand happily married to a Thai.
Do not under any circumstances buy any vehicle without the book in hand. Walk away. The book is the collateral for finance, gambling debts, loan sharks etc and Thais are professionals in lying as to its whereabouts.
I recently used isaanlawyers.com for prenuptial and usufruct and had excellent service. The owner is Canadian. I've also seen siamlegal recommended by many people.
The Only prenuptial that would stand up in Thailand would be signed in Thailand. A prenuptial signed in Australia would have zero effect on Thai assets chased under Thai law.
Some of the high end shops are open if you fancy a new Rolex, but all the "normal" shops are closed and boarded up. I blagged a ticket for the lounge last week but even that was serving very basic fare.
You need certificate of residence which you can get from immigration when you do 90 day report. Cost me 500 baht and need yellow House book or lease from landlord. Medical certificate is 100 baht from any clinic and states simply you are "strong". I just colour photocopied my license front and rear and this was fine. I went alone and managed to get by without a translator, you do the simple tests first which are unfailable. It was colour blindness, depth perception, a reaction test and the peripheral vision. Then sit and watch the 4 hours video which has English subtitles. Then get picture taken and get your license. Different transport offices may be slightly different but its all straightforward. 🙂