Aronian has a really cool/interesting swagger in person. You can kind of see it on the broadcasts but in person you can really see his arsenal of neck stretches, sleeve rolls, repositioning himself in his chair, etc.
Karjakin was the one just killing it. He has a sort of "swooping" style of moving his pieces. I think I noticed it before but it's more pronounced in blitz as there is still that flavor to it even when he's making a bunch of moves quickly. Navara actually uses his whole hand more or less to move the pieces. Hikaru has one of his little fingers up in the air a bit like he is fluent in Italian or something.
The sitting body language, even of how their feet are positioned is kind of interesting too. Again, you can see it on broadcast too but guys like Caruana and Dominguez just look like snipers or something. Very little movement, reaction, or anything from them the entire time they're at the board or even when on break. Anand always looks like he's just hanging out, even though he had a bad day at the office. I think he'd have the exact same body language hanging out at the beach or pool as he did in between breaks.
You can take pics but you have to have a camera (not a phone, which you can't take into the playing room). I did not know this otherwise I probably would have thought to dust off some sort of camera to bring with me. So, no, I don't have my own photos. But, I mean, there were always 34234234324 people next to me taking photos and many will get published and be much better so I think those will work well if I want photos.