As the title of the post says, the production has now moved to Croatia and they start filming in the Dubrovnik area tomorrow. The locations used are the Trsteno Arboretum we know from S2, the Belvedere hotel terrace, and a new addition, the Gradac park just outside the old city centre, according to our sources. Dubrovnik.net has this report up.
Among the talent arriving to Dubrovnik are Sophie Turner (Sansa), Gwendoline Christie (Brienne), and Tony Way (Dontos Hollard). Pedro Pascal (Oberyn Martel) should be there soon as well. Below is a photo of him with his practice spear, still in Belfast by the looks of it, and here is Pedro having fun with Indria Varma (Ellaria Sand).