1 Vietnam seems to have a "marmite" gay scene, ie visitors either like it or hate it.
2How did these work out ? Were they all offering a good service at a fair price ?
Did you encounter any pretending to not be money boys and then demanding money ? Or any other dubious behaviour ? I like money boys who declare they are money boys at the start of any phone app dialogue, then do exactly what they agree to do for the agreed price.
[I'm not suggesting any of this is a problem in Vietnam. However I'm asking as boys are more trouble in some countries than others]
3 There is also a 2019 visit report from another contributor here: https://www.gayguides.com/forums/forum/24-gay-vietnam/