I can appreciate your feeling that it seems somewhat voyeuristic to go and view the proceedings, when you have no direct/indirect connection.
However, that you say just that demonstrates your awareness of it not being entertainment, but something which deserves solemnity and respect.
British justice is an open system, a system in which justice has to be seen to be done, in that the rights of the individual are protected when they are subject to the power of the court.
Just as you would vote and understand that such a democratic right was secured by our parents/grandparents/great-grandparents generation, so it is the same with the British judicial system.....something that others have fought and died for. By witnessing it you are ensuring that principle stands tall.
Yes, the case will attract multiple column inches, particularly at the opening and most definitely the conclusion, although sub judice will allow only for the court proceedings to be reported before the case is finalised.
With an approximate trial period of up to six months then I suspect that most MSM will only report limited detail, which may be misleading if not able to be taken in context with evidence that is not reported.
I hope that a half-decent court reporter will be given the opportunity to follow the whole case and report it comprehensively.
I may go myself, because I cannot remember a case where I feel the presentation of the evidence, interpretation and expert witness testimony may need so much scrutiny from the British public as a whole.