By Bret Kenwell Carnival stock is higher after the cruise line beat earnings estimates but missed on revenue expectations. Here are the levels to know. Carnival Cruise (CCL) – Get Free Report opened 2.7% lower on Wednesday, fell as much as 4%, and then reversed higher. At last check, they were up 5.2%. The rally follows a mixed earnings headline for the cruise operator. A loss of 85 cents a share beat expectations by 4 cents a share, while revenue of $3.84 billion missed expectations by about $110 million. Management seemed upbeat about business, even though the U.S. and global economy are sta…