Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 145.98; Flight Crew Total 2631.05; Flight Crew Type 145.98
Communication Breakdown; Distraction
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Passenger Misconduct
General None Reported / Taken
Environment - Non Weather Related; Human Factors
Family of four delayed flight due to their 2 year and two month old and 5 year old not wearing masks.  Mother told Agent; Supervisor and flight attendants [the] children would be fed for entire flight to avoid wearing masks.  After I was briefed on the situation we had the Supervisor repeat the mask requirements which they agreed to follow.  During the flight the father was asked to put on his mask and he pointed at his cup of soda and cookie; but would not speak.  By pointing at the soda/cookie he was indicating he did not have to wear his mask.  This went on for a long period of time during our 3 plus hour flight.  Our flight was close to capacity.   I also informed Dispatch and asked for a Supervisor to meet the flight as the family was supposed to connect on another flight.
Air carrier Captain reported a family ate and drank during the entire flight to avoid having to wear face masks.