Cally, I have been to Turkey and had no problem eating low carb, I ate kebabs without the wrap, they do lots of one pan 'fry ups, eg flash fried meat with peppers, onions and tomatoes, lots of fresh charcoal grilled fish with vegetables, aubergine dishes with that. In restaurants, just ask what there is in the particular dish, explain that you cant eat potatoes, bread, rice or pasta or whatever, if you want to have bread go for the very thin like bread, called lavaş. It depends how low carb you want to go.
You could have a some hummous as well. its low GI. Kebab or koftas, baba ganoush with lots of veggies/salad. YUM in a minute I''ll come on holisay with you :lol:
Just enjoy your holiday, make sure you keep your insulin cool and be prepared for the heat.
All the best x