Ronald didn't exactly lie to his wife about Exchange Island. He explained fully that when they landed, they'd be swapping bodies with another guest on the island. What he didn't mention was that he picked a time to visit at the height of Asian tourist season. He wasn't shocked at all to find himself in the body of a Japanese woman upon landing, but he knew he couldn't seem too excited in front of his wife. He pretended to be devastated about finding himself in a woman's body; he further pretending to shut down, asking for some time to himself. But when he was finally alone, he couldn't help but smile; this was exactly what he wanted.