For 800K you’ll probably find a swift transfer is less in fees than Wise. Wise is great for smaller amounts over swift, but for larger amounts it becomes less so.
Wise is a cheaper way of transferring but may not show as an international transfer depending on the intermediary bank they use. For 800k you’ll possibly not save any fees so just do a swift transfer that is guaranteed to show as an international transaction.
My kids were notified about 2 months ago from SCB. Years ago I got them their SIMs in my name as it was just the way you did it then as they were minors.
The provider I used wouldn’t change the names over so they had to get new sims. Spent about an hour at the bank updating their phone numbers but wasn’t charged anything.
Most posts seem to indicate that there generally isn’t any issues entering. There have been a couple of posts where people have been questioned but eventually let through.
I guess it’s like many entry issues. If the IO is having a bad hair day you may have issues.