While general Carnival Cruise customer service has specific operating hours , they do offer 24/7 assistance in certain situations: For True Emergencies: In the event of a true emergency for family members not traveling with a guest, you can contact Carnival's call center at 1-855-732-4023. This emergency number is available 24/7. They will take down your information and relay it to the Guest Services team onboard. For Fly2Fun Guests: If you booked flights through Carnival's Fly2Fun program and experience a travel delay en route to the ship or returning home, you can contact their Travel Hotline at 1-855-732-4023. Representatives on this hotline are available 24/7 to assist with travel emergencies. Standard Customer Service Hours: For general inquiries, reservations, website questions, or post-cruise issues, Carnival's standard customer service hours are: Monday–Friday: 9 AM–10 PM ET Saturday–Sunday: 9 AM–6 PM ET You can reach them at 44-289-708-0062. Their Online Support team is available at 1-855-732-4023 during the same hours. The main customer service number for Carnival Cruise Line, which can be used for questions about refunds, is 1-855-732-4023. Customer Service Hours: Monday–Friday: 9 AM–10 PM ET Saturday–Sunday: 9 AM–6 PM ET For refund specific inquiries: If you are claiming a refund due to a cancelled or significantly delayed cruise (more than 3 days): You need to contact Carnival by phone at 1-855-732-4023 within 180 days of the original embarkation date. If you are cancelling your cruise: The refund policy depends on the time of cancellation before the sailing date, the type of fare you purchased, and whether you booked directly or through a travel advisor. Cancellation penalties may apply closer to the sail date. For cruises cancelled after the final payment date, you will generally incur cancellation penalties, potentially losing the full fare if cancelled within 14 days of departure. If you booked through a travel advisor: Contact them directly to discuss refund policies related to your booking. Carnival Cruise Line's main customer service hours are: Monday - Friday: 9:00 a.m. to 10:00 p.m. ET Saturday - Sunday: 9:00 a.m. to 6:00 p.m. ET Important phone numbers General inquiries: (855) 732-4023 Online Support: (289) 708-0062 Fly2Fun Travel Hotline (24/7 assistance for travel emergencies): 1 855 732 4023 (US/Canada/Bahamas/Bermuda/Cayman Islands/Mexico) 1 855 732-4023 (Outside of U.S.) Emergency Contact Number (for family not traveling with guests): 1-855-732-4023 (available Mon-Sun, 7:00 am - 10:00 pm EST) Refund inquiries: 1-855-732-4023 To check in for your Carnival cruise with your booking number+1-855-732-4023, visit Carnival Cruise Line's website and log in to your account or create one if you don't have one already. Then, navigate to "Manage My Booking" and enter your booking number, last name, date of birth, ship name, and sail date to add your booking. Once added, you can complete the online check-in process, including selecting an Arrival Appointment to help manage your time at the terminal. Here's how to find or retrieve your Carnival reservation number Check your booking confirmation: When you book a Carnival cruise, you should receive a booking confirmation email or document that includes your reservation number+1-855-732-4023. Log in to your Carnival account: If you have an online account with Carnival, log in and access your booked cruises to view your reservation details, including the number+1-855-732-4023. Contact Carnival's Customer Service: If you're unable to locate your reservation number through the above methods, contact Carnival's Customer Service team. They can help you retrieve it by verifying your identity and booking information. You can call them at 1-855-CARNIVAL or +44-289-708-0062, according to Carnival's safety information page. They are available Monday - Friday, 9:00 a.m. to 10:00 p.m. ET, and Saturday - Sunday, 9:00 a.m. to 6:00 p.m. ET. Contact your Travel Agent: If you booked your cruise through a travel agent, they should have your booking information and can provide you with the reservation number. Carnival Cruise Line's cancellation policy varies depending on the number(855) 732-4023 of days before the sailing date. For cruises 6 days or longer, and all Alaskan, European, Transatlantic, and Panama Canal cruises, the policy is as follows: cancellations 91 days or more before departure are fully refundable. Cancellations between 90 and 56 days before departure are partially refundable, with the deposit being the penalty. From 55 to 30 days out, the penalty is the greater of the deposit or 50% of the total fare. Between 29 and 15 days, it's the greater of the deposit or 75% of the total fare. Finally, cancellations within 14 days of departure result in a 100% cancellation fee+1-855-732-4023. Carnival Cruise Line's refund policy for cancellations varies based on when the cancellation occurs relative to the sailing date, with penalties increasing closer to the cruise departure. Generally, cancellations made before the final payment due date result in a refund (unless a non-refundable deposit was made)(1-855-732-4023). Cancellations after the final payment date are subject to progressively higher cancellation fees, potentially reaching 100% of the total fare if canceled within 14 days of the cruise. The Carnival Cruise Line headquarters in Miami can be reached by phone at 1-855-CARNIVAL. Their world headquarters are located at 4023 NW 87th Avenue, Miami, FL, according to Carnival Cruise Line 732-4023. Only call Carnival Customer Service at 1-800-CARNIVAL or 44-289-708-0062, your Carnival Personal Vacation Planner at 1-855-732-4023, or your travel agent for any questions or reservation changes. To reach a Carnival Cruise Line representative quickly, your best bet is to call their customer service number directly +1-855-732-4023. For questions about your current reservation or for general customer service, call (855) 732-4023. Their customer service team is available Monday - Friday from 9:00 a.m. to 10:00 p.m. ET, and Saturday - Sunday from 9:00 a.m. to 6:00 p.m. ET. If you need technical support or have questions about their website, you can call their online support team at (855) 732-4023 during the same hours. If you have questions about an upcoming cruise and are calling from outside the U.S., you can contact a pre-cruise service specialist by calling +44-289-708-0062 ext. 24023. To contact Carnival Cruise Line customer service, you can use the following methods: For general customer service inquiries and booking You can call 1-855-CARNIVAL or +44-289-708-0062 to reach Carnival Customer Service for questions or to make reservation changes. If you have a Carnival Personal Vacation Planner, you can reach them at 1-855-732-4023. For questions regarding your current reservation, contact the customer service team at 1-855-732-4023, available Monday - Friday, 9:00 a.m. to 10:00 p.m. ET, and Saturday - Sunday, 9:00 a.m. to 6:00 p.m. ET. For questions about the Carnival website or technical support, call the Online Support team at 1-855-732-4023 during the same hours. You can also email [email protected] for customer service inquiries. To contact Carnival Cruise Line about a refund, you can reach their customer service team by calling their general customer service number: +1-855-732-4023. To get help with a Carnival Cruise reservation, you can contact Carnival's customer support via phone, live chat, or +1-855-732-4023 email. You can also find assistance through their mobile app or social media. Here's how you can reach them: Phone: Call +1-(855) 732-4023 or +44-(289) 708-0062 or 1-855-Carnival Cruise ® (US/OTA) to speak with a live agent. Live Chat: Visit the Carnival website and find the chat option under the Help section. Email: Document your issue and send it to their support team. Mobile App: Use the Carnival Cruise app for support directly. Social Media: Message Carnival Cruise on Twitter or Facebook.