Booking Tickets at Silverstone

Hi All, hope you're well. It will be my first time booking tickets to a track. I'll be going to Silverstone for the MotoGP. Just looking for general tips. Is Club Corner the best grandstand seats?

As I was checking it, it looks like 3 days is only £20 more than the Sunday. This doesn't seem right, so I thought I would check in here:

https://preview.redd.it/p1yhek1e556g1.png?width=648&format=png&auto=webp&s=5a730f41c67191fa41920a37a4edff24e0c95fdf

Is there anything I need to bring with me? And are the seats first come, first serve? I presume the earlier I arrive, the better.

Many thanks.