Right, as a rule, your child and you have to do the whole process over again with a new school.
But IF the child's current school and the new school can collaborate closely for you, there might be a possibility that you may be able to apply for a new visa and the following extension for your child and you without leaving Thailand. Talk with both schools and the local immigration office well and well in advance.
Others' experiences may not help you unless they who have the same nationalities as you for a parent and child changed from the exact same school with you to the exact same new school in the same province.
that depends on what you mean by "Non-O visa". If you want to apply for in-country Non-O visas based on retirement for each, each of you has to meet the financial requirements separately.
If you mean Non-O based on retirement for one of you at the Thai embassy or inside Thailand, and Non-O dependent (if you can manage to apply somehow) outside Thailand, only Non-O visa based on retirement holder needs to meet the financial requirement. dependent doesn't have financial requirements.
, officers have their job to do as you say. However keeping the passport legally and legit including the stamps on it is the passport owner's responsibility, not the officers'. Humans make mistakes.
Technically you have to keep your 400k baht for “the rest of the year” of your extension, means until 19 June 2024. But as you already got a new yearly extension, the chance of being checked the balance in your account would be a slim (but cannot guarantee on any single different scenario). Your decision which way you want to go.
, no it’s not possible if they want to apply for Non-O based on retirement. US citizen can not get affidavit of monthly income, or use 65k baht monthly international transfers for in-country Non-O visa based on retirement and for the first yearly extension.
if you mean you opened your 800k baht account in January 2024, THIS year, you need to get the bank transaction history with your another account as well to make the whole 1 year history to show you keep the regulation of 800 k for three months after your current extension granted last august and keep 400 k baht for the rest of the year.
, those are already in the sheet Tod provided as “other forms (acknowledgements and statement)”. And anyway the sheet is general information as in the disclaimer.
, you mean Multiple Entry Non-O based on marriage to a Thai that you apply at the Thai embassy, not inside Thailand. And unfortunately, it is not available on eVisa system anymore since the system update last October.