I've been reading about the shutdown of tubing in Vang Vieng. I'm wondering if someone has information about whether the authorities enforce the shutdown? I was there some years ago when it wasn't as bad as it got in the last few years and I hoped people would stop coming to this beautiful place just for mushrooms and cheap booze.
CNNGo has a piece on this as well, explaining about how it was done. It sounds like there was a major expose and resulting crackdown.
Wikitravel's page on Vang Vieng also states that there's been a massive shutdown.
(note, an Esky is a coolbox - Aussie word).
It seems that despite safety restrictions, you still get situations like the following occuring:
So long answer short - yes, there was a crackdown, but no, it hasn't stopped completely - so to answer your question, you can probably still do it, for now.