If I am 16 years old but would like to bring my friends who are 15 years old, can we go into the attraction without an adult? Children 15 and under must be accompanied or supervised by an adult, prince or princess aged 18 years or over. Related articles Is there a maximum age restriction? Are there any restrictions for children at Shrek's Adventure London? How long does the 4D Magic Bus Experience last for? How old can you be to enter the attraction unaccompanied? What if I'm running late for my time slot?