i think its way more likely that someone who memorizes someone elses essay hasnt practised much and will fall flat when they have to adapt the essay for a question
the rules are that youre allowed to take a rest break when you choose and that you have to inform the supervisor. 5 minute every 30 minutes just refers to the amount of time you get, not that you have to take rest breaks every 30 minutes.
was this from your teacher? they could email nesa and tell them they suspect you cheated because you emailed them asking if you would get caught, then nesa would prob pull up your student number and find your essay.