The main ones are weapons. "Leave the swords, knives, toy guns and realistic-looking weapons and explosive devices at home, or pack permitted costume props in your checked baggage," Jeffries says.
The team behind the actor's 60-plus prosthetics shed light on how they created one sexy rattan man, from his flax lashes to his basketweave bulge.
Clayface introduces the DCU's version of Gotham City, but what about Batman? Here's what we know about James Gunn's version ...