If you are married, you already have the marriage certificate translated and certified into Thai, so you do not need to do it again. I'm married and on the marriage extension so I speak from experience.
I'm not sure what Kool Breez is referring to, but I have left Thailand by land before in 2018 with an old + new passport. On the Thai side, upon leaving, they transferred my last two pages from old to new passport. It's a straightforward process that many have done since. You can do it at immigration or upon leaving at the airport or border.
I disagree. You don't need to project your own thought into others. This group is filled with some low-level humans, the bottom of the barrel, but that does not represent your average family coming into Thailand.
The newb saying that this is already happening are missing the point. Yes, it's already happening, but what is proposed is forcing hotel and others to charge dual pricing. It's very different from having freedom of choice. Hotels are pushing back against that because they know that this will get worldwide coverage if implemented. You guys are selfish and narrow-minded. This will push away local family industry, etc, in favor of "rich tourists" who goes to fancy hotel and restaurants. The poor street food vendor and guesthouse owner will once again be the one losing here.
I have never heard of anyone getting an extension based on marriage with an agent for that amount. The whole point of using an agent is they will put the money into your bank account.
OP's friend was caught at the airport upon leaving so he should not have been banned. The story is missing some parts. But yeah, 5 years for 3 days is insane. Was your friend working illegally or anything like that?
There is no ban if caught at the airport for less than 90 days overstay. A 5 years ban while leaving Thailand is for a 3-years overstay. Your friend is not telling you everything, but it doesn't matter. The 5 years ban is over, he should be able to come to Thailand.