Also get insurance before you leave as your normal Travel Insurance will not cover a Jeep Sarfari which is classed as a Hazardous Sport. The Jeep Company may insure you, but this only covers treatment in Turkey.
So miss a flight home because you are in hospital and it will be really expensive to get your own.
I have to say I am really surprised that anyone would think of taking children on one of these trips, seems like utter madness to me.