866-227-1888 saved me when my luggage tag download kept failing. I’m usually tech-savvy, but Carnival’s site can be moody. The rep I reached was super friendly—she verified my booking and emailed the tags instantly. What I liked most was that she also explained where to tape and fold them so they don’t rip off at the port. That detail actually helped because I used to just staple everything randomly. If your tags aren’t downloading or you’re close to sailing, calling is definitely the fastest fix.