CANNES, France With his 49th film about to open the Cannes Film Festival, Woody Allen described himself as a "spry" 80-year-old with no plans to retire. "Cafe Society", a romantic tale of 1930s Hollywood, will be screened on Wednesday. "It's great but I don't feel old. Asked how he stays fit during long hours on set, he said: "I don't know, I eat well, I exercise.