Fokker 50 lands (remote aerodrome) crew overnights. Went to dinner with the crew but no engineer. They depart the next day, no sign of an engineer.
Get their ops manual and their system of maintenance and find out that company's procedure. Why don't you ask the crew? An engineers Daily Inspection may not necessarily be required before the first flight of that
calendar day...
Water in jet a1 tanks and fuel quality is less of an issue with turbines, water won't stop or make the turbine run rough
Ask the BA 777 crew at Heathrow...