Anyone can attend any trial. You don't have to "sign in" or tell anyone who you are or why you are there. The court house belongs to us all, as tax payers and you have every right to be there. If you are questioned at all, it would be by a reporter in the hallway, nothing like that is going to go on inside the court room. All you have to say is, "I'm here out of curiousity", or "it's none of your darn business", but chances are, no one will give you a second glance. There will probably be a lot of spectators at the trial.