You will have been given a wristband on Saturday Practice. If you are returning for the Racing on Sunday, you must still have your wristband. If it is broken, you must bring it back to the circuit for a replacement.
If you do not return with your wristband, you will be required to sign on again. Due to staff shortages and the number of entered competitors, this process is likely going to delay your entry for some time!
Finally, if you have not been listed as an accompanying persons, DO NOT COME TO THE CIRCUIT.
Motorsport UK COVID Guidelines are clear that a maximum of 2 named persons can accompany a driver, and at this point in time, all of these persons will already have been submitted.