Hey Daniel – the gates open at 6am on Sunday. I am leaving at 5am (from Buckinghamshire) and hope to be parked up and in the circuit by 7am (but I have pre-booked my parking). Looking at the Silverstone twitter feed today, they say the traffic was moving quite nicely at 8am.
I wouldn’t chance anything on raceday morning. So if you can book some parking tonight, I suggest you do that.
I haven’t seen the new hybrid engines in person either. But I was told by the Silverstone customer service team that all grandstands have a view of a screen, and therefore you will hear the commentary from that. We are also bringing an FM radio with us. They are selling radios on-site on the day too.
Hope that helps!