I will also be applying in Vientiane. I got a letter of reference from my Credit Union in the US, which includes a summary of my account balances as of Oct 24 (I'm applying Nov 1). AND I will be submitting bank statements for the prior 5 months (May-Sept), just for good measure.
Would you mind please sharing it with me as well? I just sent you a friend request, which will facilitate sending me the text by Messenger. (you can ignore friend request, or I will 'unfriend' you after I get the message) -- thanks!