Way to go Nepal.  Why not just abolish tourism altogether?  It's not like the country makes any money from it anyways...  Watch the number of tourists that detour their trips to India.  For the love of god, its a freakin disco.  If you want to regulate the rowdiness then stop selling acohol after a certain time, maybe midnight.  But to eliminate the source of revenue for the business owners who invested into a country they believed would give them a chance at being successful is only tellings others not to invest in it.  Curent example: Russia