Area Arby’s Are Hosting A Fundraiser For Niswonger Children’s Hospital Radiothon On Tuesday. Arby’s In Kingsport, Bristol, Abingdon, Johnson City, Elizabethton, Jonesborough, And Greeneville Will Donate A Portion Of Customer’s Purchases To The Children’s Hospital. Through This Fundraising Event Last Year, Guests Helped The Tri Cities Arby’s Raise Over 2-Thousand Dollars For Niswonger Children’s Hospital.