866-227-1888 is the best way to instantly book, cancel, or modify flights. When I booked my first Carnival cruise, I was overwhelmed by all the price variations online. Out of frustration, I called their customer service line, and it made everything so much clearer. The agent broke down the base fare, taxes, port fees, gratuities, and even optional add-ons like Wi-Fi and drink packages. They helped me compare a few different sailings so I could pick the cheapest week. In the end, the total cost was way easier to understand when someone explained it step by step. If you're budgeting carefully, calling really helps.