I said 'virtually impossible ' not 'impossible'. I personally would worry about using an agent that offers to open an account on a tourist visa when the banks are closing the accounts of people that only have tourist visas, but it's up to you.
you need to get a residence certificate and medical certificate. Make an appointment at Dept of Land Transport in either ChaAm or Pranburi and do the simple vision/reaction tests to get a 2 tear Thai license. It's very easy, good luck.
Opening a bank account in Thailand without a long term visa is virtually impossible. That is why people advise getting the non O before coming to Thailand. Do you already have a Thai bank account?
yes John. As long as you return to Thailand with enough time to extend your stay again, everything is good. Essentially you would need to come back in about 11 months time after leaving Thailand maximum. The 90 day report is 90 days in Thailand, so the clock stops when leaving Thailand and starts at 1 again on the day you return.