Being new to the cruise scene, I'm not familiar with many of the resources out there. Cruise411.com is showing a rate of $200 less than what Carnival gave me for a cruise I'm taking in November (Carnival's rate was the same as Expedia's and Travelocity's for the cabin category I wanted).
What are the odds of Carnival matching the price, or offering me a shipboard credit for the difference? And if the odds are good, what's the best way to go about doing this?