Adding a person to a Carnival Cruise booking involves modifying an existing reservation to include an additional passenger. For instance, if you've already booked a cruise for two but later decide to bring along a friend, you'll need to update your booking to reflect the change.
Making this adjustment is crucial for ensuring that all passengers have proper documentation, accommodations, and access to the ship's amenities. It also allows Carnival to accurately plan for the number of guests on board. Historically, cruise bookings were handled exclusively through travel agents, but the advent of online booking platforms has empowered travelers to manage their reservations directly.