I have some people coming over who practice Buddhism, what should I know?
I have been to Nepal on a retreat, it is a Hindu country, but there are many Buddhists.

The main Buddhism there is Mahayana by far, with a large influence from Tibet (monks who escaped after the situation with China).

Most of them do not eat meat (I spent days without eating meat there), but they used to eat eggs. You should ask, they will not be offended.

Most Buddhists take seriously how we treat a Buddha statue, so do not put it on the ground, do not put it on the bathroom or too close to shoes, treat it and buddhist books with basic respect, as if it were a guest in your house. Incenses are very common in Nepal, if you want to be extra nice you can put some together with the statue.

Most Nepalis I met (not monks) were very curious about technology and other cultures, internet there is very bad and slow, also it is a very, very poor country, so most of them dont know much about America, they will probably appreciate a visit around the city with some background stories :)