Is there a height restriction for the 4D Magic Bus Experience? There is no height restriction for the 4D Magic Bus Experience, and small children can sit on adult laps when required. Related articles Are there any other restrictions for the 4D Magic Bus Experience? Under 2s go free – how to book How long does the 4D Magic Bus Experience last for? Are there any restrictions for children at Shrek's Adventure London? Is the 4D Magic Bus Experience accessible for disabled guests?