To receive the shareholder benefit of onboard credit (OBC), you must own at least 100 shares of Carnival Corporation (CCL) or Carnival plc at the time of sailing. This benefit applies to all Carnival brands, including Princess, Holland America, and Cunard. As of 2026, the credit amount is tiered based on the length of the cruise: $50 for sailings of 6 days or less, $100 for 7 to 13 days, and $250 for cruises of 14 days or longer. To claim the credit, you must submit proof of ownership (like a brokerage statement) via the StockPerks app at least three weeks before your departure. It is important to note that the benefit is limited to one credit per stateroom, even if multiple passengers in the room own 100 shares, and it generally cannot be combined with other "friends and family" or travel agent rates.