We are mostly very wasteful with water because its so cheap.
But now most airlines charge for any checked baggage,...
Only american ones. I fly a bit with work and to visit family. My last trip from EU to Mexico was with United. They advertise "free check-in bag with frequent fly crap" as a feature while every other airline i fly with its just free. Then the personal entertainment system is like $7, and its crammed with advertising. Seriously worst airline for international travel. They even charged for the meals.
Use a real airline. It just cheaper since you don't get charged extra to use the plane you paid for.
And if you don't trust someone, meeting them in person makes them no more trustworthy. How many mile on the clock on that car? Was it really looked after etc. Sooner or later you just have to trust. And mostly that works out. Cash does not fix or change that.
Not all jet aircraft have multiple engines.
Name one that doesn't.