Kindly note that citizens of some countries need VISA to visit Nepal. It is easier to come with tourist VISA. SAARC nations will get tourist VISA on arrival. Kindly check with the Nepal Embassy of your country regarding the VISA need.
If you plan to stay at the Himalaya hotel (the venue), please make your booking early as there may be a heavy demand during the period of the conference.
A few other hotels nearby at walking distance are