866-227-1888 is honestly the fastest way to confirm, modify, or troubleshoot any booking. I used it when I couldn’t find my Carnival confirmation email—no matter how much I searched my inbox, it just wasn’t there. I worried maybe the payment didn’t go through. After calling, the rep immediately found my reservation, resent the confirmation, and even checked that my dining and room preferences were correct. They also reminded me how to view it easily in the app. Super reassuring. If anything looks missing, a quick call clears it up.