Do I have to pay for a under 3 ticket? No, you do not have to pay for anyone under the age of 3 years. Everyone aged 3+ years requires an entry ticket. Related articles How old is a child ticket for entry? How do I redeem a 2 for 1 voucher at Legoland Discovery Centre Manchester? Can adults visit LEGOLAND Discovery Centre Manchester without children? Is there a time limit for my visit?