No courtesy car after Accord recall?

My dad's 2006 Honda Accord has been recalled for the fix on the Takata airbags and every dealer I have called is refusing to offer him a courtesy car unless he services the vehicle too. We've been told that the work will take around three hours and cannot be completed on weekends. Is it right for my dad to have to cancel half a day of patients at his clinic to get his faulty car repaired? We've always had courtesy cars made available to us when we've had warranty work done on our other vehicles.