that will result in a US $33.80 subtracted from your incoming transfer. Been there, done that twice last month as I couldn't wait 6-7 days for the transfer. Now it seems they are back to 24 hours transfer time.
In my experience, every selection (buying property, school expenses, monthly living expenses, medical, etc.) results in an international transfer. I've tried every one and use Wise 2-4 times a month for years. Always shows as International.
you can legitimize your child at the Amphur for 30 Baht, but generally that is when they are 7, although it is up to the boss at the Amphur. My kid was able to answer all the questions and sign the books when he was 5 years. Or you can marry the mother. Same outcome.