𝐆𝐞𝐭𝐭𝐢𝐧𝐠 𝐍𝐨𝐧-𝐎 𝐫𝐞𝐭𝐢𝐫𝐞𝐦𝐞𝐧𝐭 𝐯𝐢𝐬𝐚 𝐰𝐡𝐢𝐥𝐞 𝐢𝐧 𝐓𝐡𝐚𝐢𝐥𝐚𝐧𝐝 𝐯𝐢𝐬𝐚-𝐞𝐱𝐞𝐦𝐩𝐭

I would like to ask some questions about getting a Non-O retirement visa from local Thai immigration, probably in Hua Hin or Bangkok, while in Thailand on a visa-exempt entry:

1. Does the 800,000 THB bank deposit need to be 𝘴𝘦𝘢𝘴𝘰𝘯𝘦𝘥 by at least two months for the initial 90-day Non-O visa as well or does that only apply to the subsequent one year extensions, but not to the initial 90-day Non-O visa?

2. I know that the 800,000 THB bank deposit needs to be 𝘪𝘯 𝘢 𝘛𝘩𝘢𝘪, 𝘯𝘰𝘵 𝘧𝘰𝘳𝘦𝘪𝘨𝘯 𝘣𝘢𝘯𝘬 𝘰𝘶𝘵𝘴𝘪𝘥𝘦 𝘛𝘩𝘢𝘪𝘭𝘢𝘯𝘥 for the subsequent one year extensions. Does this also apply for the initial 90-day Non-O visa or would a deposit in a non-Thai bank outside Thailand also be acceptable for this?

3. If not, then how would I open a bank account in Thailand for this if doing so without a long-term visa is apparently very difficult, but I would need this bank account to get the long-term visa?

4. Is it also possible to get the initial 90-day Non-O visa in any of the neighboring countries in South East Asia without being a permanent resident there and would the answers to question 1 and 2 above be different there? If so, what would be the best locations for this?

Thank you!