Sorry, details a bit hazy after 20 years. 124 pax I think - some of them always got up as the a/c approached the stand, even with the cabin crew shouting at them. You will find that the catering will fall out when the a/c stops dead, whether it's "secured" or not (ours was). If you haven't seen a bowser drive in front of a moving aircraft recently, maybe standards have improved in your neck of the woods over the last 20 years. Having said that, I saw one last week.
As I recall, the brake failure was caused by the electrical power changeover when the engines were shut down.