The other thing to watch for is cancelled or re-scheduled flights. We encountered this problem on our last two cruises. The airlines automatically rebooked us on flights they had changed or cancelled - and didn't notify us. I found it by checking on my flights online. One change had us arriving after the ship sailed, and on the second occasion, had us departing before the ship docked. I always book my own flights because I like to know what I've got, and when you go through the cruise lines, you don't know until you get your tickets (unless that's recently changed). However, you do need to pay attention and keep checking. You don't want to wait until you go to print your tickets 24 hours before you leave.