How old must you be to enter the attraction unaccompanied? Unaccompanied Minors Except when participating in events intended for young guests, such as our educational field trips and summer camps, children 14 and under must be accompanied by an adult aged 18 years or older. Was this article helpful? Related articles Can I take a backpack into LEGOLAND? Do I have to pay for an under 2? How do I access imagic? What are the Ride Height Requirements at the Water Park? What are the ride wait times today?