Categories: The cabin classes divide the ship into four different classes with different specifications, but we go even more fine-grained than this. The average cruise ship features about 25 cabin categories. Each cabin category contains different sub-categories to precisely differentiate room types.

On a cruise ship, "category" refers to the specific classification of a stateroom based on its type, location, and amenities. Beyond the basic divisions of Inside, Oceanview, Balcony, and Suite, categories are often designated by alphanumeric codes (e.g., 1A, BD, or GS). Factors that influence the category include the deck level (higher decks are often higher categories), the view (obstructed vs. unobstructed), and the proximity to amenities like elevators or the spa. Some categories, such as the "Sanctuary Collection" or "Reserve Collection," include VIP perks like priority boarding, exclusive dining room access, and even a welcome bottle of wine. Understanding categories is essential for travelers because a "Guaranteed" category might offer a lower price but allows the cruise line to choose your exact cabin location, which could be in a noisier or less desirable part of the ship.