The dance and songs were fun to see and hear. Travel by air is easy. The only time that I had to be carried was on Buddha Air to see Mt. Everest. All of the international carriers had aisle chairs and ramps or lifts to get me in. Most tour are not accessible because of the bus.
Public transportation is also impossible most of the time.
For me a cab works fine. The guides and car that we had in Istanbul and Kathmandu were great and I would highly recommend either of them. Be ware of so called bargains. When I see a setting where the accessibility can be easily improved I say so in person or by letter. I used the internet a lot in planning this trip.