Can I book my disabled tickets online? Yes, you can. Make a booking on our website and then pre-book your free carer ticket by clicking here. You will receive your free carers ticket on arrival when providing proof of disability. Related articles Free carer ticket bookings Do I have to queue? I'm a Merlin Pass holder, do I need to pre-book? How long are queues into Shrek's Adventure London? How do I get to Shrek's Adventure London by Tube?