My take on the rules now is to stop the walking zombies who talk, text and cant put their phone down for 5 minutes. There is the refueling aspect, but also the distraction part where they walk blindly into danger. I've no problem with pictures being taken, but some go charging out of line to take the pic away from the marked walkways. Eventually somebody will get hit by ground equipment ingested or chopped up by an engine if its allowed without control.