, the point is that when I did it by bus, the border crossing took half an hour. When doing it myself it took many hours of queuing up at the border. It may depend on the time of day.
, are you sure that you have to cross the bridge if you have the Lao visa already? The very first time I actually got the Lao visa on the Thai side. I will always go for the eVisa if possible instead of queueing up somewhere.
, maybe the wrong word, but I guess you understand? I have been using the bus from Udon. They opened a dedicated line for the bus at the border. You are right that the OP is talking about a bounce. Actually, a border run would be the same in usual terms. You won't need to go to Vientiane for any of those if you do not want to. However, he was also talking about crossing the bridge, which is not needed for a bounce or run.
, I never heard of anyone being asked to show money at the border if they already have shown much more money to get the visa. Non-B might be tricky in that sense as you are able to get some Non-B visas without showing money. The real pain could happen if you actually did show money for the visa but the border station doesn't believe it because some consulates don't ask you to show money for the visa in question.