updated 08/01/2012 AT 6:05 PM ET
•originally published 08/01/2012 AT 2:00 PM ET
Guess who lost his shirt at Disney World?
While Cruise’s ex, Katie Holmes, was in New York after handing off their daughter to him, the actor, 50, frolicked around the theme park – with its high slide and lazy river – like a little kid, an observer tells PEOPLE. He was wearing flip-flops, a swimsuit and a T-shirt and cap that he eventually shed.