<p>Thanks for all advice. The apartment hotel should have a wall safe if I choose to leave the gear back at the hotel. I didn't even think about the heat that might build up in the car. It's a family holiday, but I am planning to spend a few days for photography (landscape/travel) using the D750. I do have a D300s (which I'm planning to leave at home) and a GoPro to get photos/videos on the go with the family. </p>