Will I have to queue to get into LEGOLAND Discovery Centre? We advise all guests to reserve their tickets online to limit the amount of queuing to enter the attraction. You can pre-book your entry time and date by clicking here. Related articles How do I book a time slot with my Merlin Annual Pass? What if I'm running late for my time slot? Why do I have to book into a time slot? If I visit for last admission, how long will I have in the attraction?