Hi Georgiasheppard,
A warm welcome and thanks for posting on our community forums. How jealous are you making us all going on Holiday.
You can check the link here
https://www.virginmedia.com/help/virgin-media-roaming-hub/Turkey for more information about call charges, text and data whilst in Turkey.
Please make sure that you have set your phone for roaming before you leave the UK, as once you are abroad, we may not be able to set things up when you're not on the UK network.
Have an amazing holiday.
Kind regards Jodi.