Which of the following is NOT a type of information a pilot should check prior to a flight?

In the context of flight preparation, pilots have a set of critical information sources that are utilized to ensure a safe and efficient journey. Fuel requirements are essential to assess, as they determine the necessary amount of fuel for the flight, including reserves needed for delays or emergencies. Traffic delays are also important; knowing the current traffic situation can impact flight planning and possible rerouting. NOTAMs (Notices to Airmen) provide vital information about flight safety, such as runway closures or airspace restrictions, which are crucial for operational planning.

Airport restaurants, while they may provide useful information for personal convenience, do not directly affect flight safety or the operational aspects of a flight. Hence, pilots do not prioritize checking details about airport restaurants prior to a flight, distinguishing it as not a type of information necessary for preparing for a flight.