Without being around Kathmandu, I can't speak to how effective or consistent it has been, but the new government has made a conscious effort to crack down on nightlife within the city. It's been mentioned on
blogs and in the news. While it's hard not to comment on the marginal benefits of pursuing this as opposed to other policies, that is in some ways the least interesting part of it.
To a certain degree, the nightlife of Kathmandu, and of Thamel in particular, is completely removed from the life of the country. Without even getting into the fact that ~80% of the country is still agrarian, within the city itself, many of the popular bars are disproportionately patronized by non-Nepalis. Obviously, tourists are more likely to be going out than people who have, say, work the next day, but even beyond that, much of the nightlife is kept in business through the money spent there by visitors. Historically, an awful lot of bad behaviour by these tourists has been tolerated in exchange for the economic benefits. Drug dealing is basically tolerated within Thamel, and while I saw police officers hassle protesters and local street kids, I can't remember them ever dealing with tourists or expats, even when they were practically begging for some form of state intervention.
I can understand why the Maoists in particular are unhappy about this. While their rhetoric often seems quaint, I can sympathize with the perception of all of this as an affront to national pride. On the other hand, even beyond the simple fact that many people's livelihoods are being affected, it seems very strange to inaugurate a new era of democratic rule with major restrictions on people's social lives. Nepal has significant problems with drug and alcohol abuse, and memories of the
crown prince's massacre of the royal family are still part of the Nepali public discourse, but it seems hard to create substantive public health argument for these crackdowns.