To get upgraded on a Carnival Cruise, keep an eye out for special upgrade offers sent via email or found in your booking portal. Carnival also has an upgrade bidding program, where you're invited to place a bid for a better cabin or stateroom—the higher your bid, the better your chances. Booking early or during promotional periods may also qualify you for free or discounted upgrades. https://everestrolep.listbb.ru/viewtopic.php?f=33&t=32104