Terrible. That is the word that I feel compelled to use when describing my experience with Carnival. Where do I begin? When I booked the reservation, I was told that the room I was getting was eligible for an upgrade. The agent’s instructions were, that upon arrival at the port of Miami before embarkation, I was to request the upgrade. I did so, but was told that I needed to board the ship and ask inside. I found out, too late obviously, that once you enter the ship, there is no way for you to upgrade, even though I was willing to pay... read full review »