PayPal: PayPal can be used for qualifying cruise reservations made directly with Carnival through Manage My Booking. It is not available for group bookings. Gift Cards: Carnival Gift Cards can be used toward cruise reservations, online shore excursions, spa services, Fun Shop purchases and as a deposit toward a Sail & Sign account. Onboard Payments: Carnival ships operate cashless onboard. Purchases and gratuities are charged to the Sail & Sign account rather than paid with cash at individual venues. Sail & Sign: Guests can fund their onboard account with a major credit/debit card or a cash deposit in U.S. dollars at the cruise terminal. Refunds: When a Carnival Gift Card is used and a refund is due after cancellation, Carnival generally issues the refund as a new Carnival Gift Card.