How to Contact Carnival Cruise Booking Support – Step-By-Step Instructions - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Get step-by-step instructions to contact Carnival Cruise booking-support for seamless assistance. Call +1*(877)6641281* (U.S.), +44 (800)-054-8541 (U.K.), or +52 (800)-351-0319 (Mexico) for help with reservation-management, itinerary-updates, document-verification, and payment-processing, ensuring a smooth and stress-free Carnival Cruise experience.