If you are pleading guilty to the charge(s) then you won't need to say a word at Court. We do that for you. When it is time for your case to be heard you will be seated in the front row of the public gallery. Your Barrister will sit at the table and will speak to the Magistrate about your case.
The Magistrate does not read your file before he / she comes into Court. Your Barrister will tell the Court why you were charged and will then tell the Court about all your good points – the Barrister knows exactly what sort of information the Court is interested in.