Agravaine unwrapped his hands from the lap bar and flex hands that ached from the pressure. It wasn't the swooping or the sound and light effects that bothered him; it was the lack of control.
But Katie was so happy, he could only smile and take her hand in his. "I think that Muggles take more drugs that I previously thought possible to come up with something like this." He handed her out of the train car and tucked her up against his side. "What do you want to do next, my beautiful birthday girl?"