Can I amend my tickets to an earlier time or date on Booking Portal? No - your tickets can only be amended to a date or time that is later than your original booked date or time. Related articles Can I change my visit time or date after my original visit time or date via Booking Portal? Can I stay in SEA LIFE London Aquarium after it closes? What if I'm running late for my time slot? Can I change the date/time of my booking? Do you offer an e-ticket/print at home option?