Q-Park Unlimited Season Tickets will allow you to enter and exit the car park 24/7. There is no restriction on the number of times you can enter and exit. You always have access.
You will be issued with an access device that will allow you to enter and exit the car park. Your access device will be either number plate recognition or a physical access card depending on you chosen car park. You can see a full list of Q-Park car parks with number plate recognition here.