In just about every country in the world it is a severe crime to take naked photos of a 16 year old, and to hire someone to do it. Which occurs in the film and isn't even thought of or mentioned when trying to stop photos.
At one point the American agent says windscreen. A real American would have said windshield.
There are obvious rear-projection/ green-screen set-ups when Josh pursues Beth in Katie's car on the freeway when Sebastian and Caroline are on the scooter ,and when Alex, Katie and Beth are going to the photo shoot.