I was using my own money, not a sponsorship letter, so I don't know, but presumably that would have a different set of rules and would probably only apply to soft-power DTV. But I'm just guessing, and obviously I'm not the best guesser. :-)
yes, I thought I mentioned that? Actually it's a page and a half, because the in and out stamps are not done on the full-page visa. Lesson learned, in case I ever come back to Lao PDR.
Honestly I think a savings account would have been fine if it were on my name, as opposed to a business checking account -- but the lady said "personal checking' in no uncertain terms so I'm passing that along.
yeah, it's a USA thing. There are ways to transfer money instantly between US accounts, but they are not the default way, and are sometimes unavailable. For little people, 3 business days is normal. Having lived in Europe and gotten used to instant SEPA transfers, it's very annoying. And yes, I did overthink it.