What if I'm running late for my time slot? If you miss your allocated time slot we will attempt to allow entry as soon as possible, capacity permitting. Related articles Why do I need to book a time slot? How does the time slot system work? If I visit for last admission, how long will I have in the attraction? Will I have to queue to get into SEA LIFE Brighton? Why am I booking into a time slot? How do I contact you with a guest enquiry?