How is the money raised for Ronald McDonald house charity?

Ronald McDonald House is a support charity for families of kids with cancer and other serious illnesses. They buy and operate large residences, similar to boarding houses, where kids (and their families) can stay when they are receiving medical care in a distant city. This helps reduce the enormous financial strain on parents, and gives the kids a more familiar living atmosphere, similar to what they have at home. This psychological value has been shown to improve the effectiveness of medical treatment.