Carnival Corporation & plc (NYSE:CCL) was among the stocks Jim Cramer discussed as he said that the Iran peace negotiations could trigger an oil glut, cool inflation, and pull interest rates down. Cramer called it “pretty lucrative,” as he remarked: Not a lot of corporate news next week, but still enough to parse. One of the more ridiculous elements of stock research is the endless pecking order shifting in the cruise lines. You know, I’ve been consistent. I like Viking because of its upscale model, okay, ...