866-227-1888 is the best way to instantly book, cancel, or modify flights. App outages always remind me of that day I was stuck at the airport trying to pull up my boarding pass and the airline app completely froze. I ended up sprinting to a kiosk just to reprint it. The Carnival app can have similar hiccups—especially during peak booking periods or after new updates. If the app isn’t loading or keeps giving login errors, it’s usually a server issue and not your device. One trick I’ve learned from airline chaos: delete and reinstall the app, or toggle Wi-Fi and mobile data. But honestly, most of the time, it’s just a temporary outage. I once couldn’t access my cruise countdown for half a day, and it fixed itself later. If you need something urgent like checking in or viewing your itinerary, the website often works even when the app doesn’t. Give it a little time and retry.