I’m guessing that filming crew was welcomed over in Turkey back then, because of all the business they brought to the city of Istanbul. Who knows if that could happen today without kidnap attempts made on the Leading Lady, or acid thrown at any female camera crews who were not covered up.
I will say that my only encounter with Turkey was around 1980, while in the Navy. We went to Izmir Turkey. I was treated well, and had enough sense not to argue politics while sitting in a restaurant or a bar. This was right after the planes Carter authorized for the Iran Hostage Rescue got caught in a sandstorm.
About eight years ago, we had a couple from Izmir, Turkey at our home for dinner. He was a professor at their maritime college and she worked as a bank officer. We had a pleasant evening and they both seemed very secular. However, at some point in the conversation, something was said, in a very non-threating way, and he became quite angry for a moment.
I think his inner Islamism was awaking. We changed the subject quickly. We were on our guard for the rest of the evening and I for the rest of the year.