Just tested it (i'm in the netherlands) , in flightplan you can select (even) parts of turkey, so since the maps will load, I am assuming that you mean that you do not know where in Turkey you are going on holiday? (Perhaps Google it first so you can find it better in flightplan?)
Google also states :"All drone pilots who wish to fly a drone weighing more than 500 grams must register with the Turkish government prior to flying. ... Approval is required prior to all commercial drone flights. Drones cannot fly above 120 meters (394 feet). Dronescannot weigh more than 4 kilograms (8.8 pounds) for private/personal flights."
I'm no turkish drone specialist, but according to Google you shouldn't expext any problems with turkish customs.
(but you could have Googled that yourself...., just like I did)