The movie is about British retirees confronting fears and culture shock in India, just like Judi Dench, Bill Nighy and the other actors had to do during filming.JAIPUR, India — It was a hot, dusty morning here in the capital of Rajasthan as the cast of "The Best Exotic Marigold Hotel" slowly emerged from several battered "vanity" buses lined up in front of the iconic City Palace.