They do have a few nice friendly people within that airline. Get ready for the sun and heat when your there, also the pollution in istanbul and remember to drink more water.
Nothing much about the interview apart from explaining a few things about your background, sim test is just basically a circuit in the B737.
There are job prospects within the airline after completion of the line flying hours (qute a few friends do work in there) aslong as you complete the line hours in there standard and there are vaccancies available.
Hope this helps and goodluck.
Brian304