You can change money at the banks at the airport, town banks or hotels as needed. Be discreet in showing wallet or cash. It is unlawful to destroy Kenyan currency as the President's face is on it . Most major credit credit cards are accepted. A photocopy of the front page of your passport should be kept in a separate location.
Tourism is a chief source of income for the country.
Industrialization is becoming significant. Most large hotels and some game lodges provide shaving points with 110 v 50 cycles. Sockets are normally three pin and of the 'square' variety so an adaptor to suit this format may be necessary if there is an intention to use personal electrical apparatus or to charge video batteries. Bottled drinks or water is preferable to open pitchers. Fruit bought outside should always be washed before eating.