What is the step-by-step guide to obtaining a Non-O visa and a 12-month extension in Thailand?

To obtain a Non-O visa followed by a 12-month extension in Thailand, deposit ฿800,000 in a Thai bank account in your name. Visit the local immigration office to request their specific checklist, as requirements may vary by province. Ensure you keep the balance above ฿800,000, and on the day of application, acquire a bank statement showing the seasoned funds. You will also need a lease or contract for your residence. Dress respectfully when visiting immigration, remain patient, and be prepared to pay a fee of 1,900 baht for the extension.