SauteePan-Wow that sounds nice. I know that many of the cruise lines offer you a discount on subsequent cruises and offer you a higher status than a regular passenger.
The status is dependant on the amount of cruises that you have taken. These premier members get access to a special lounge on the ship and they also get to dine with the Captain.
In addition, they also get discounted rates on additional cruises and really get offered the V.I.P. treatment.
They also have different colored keys in order to denote their special status. They usually try to get you to book your next cruise while on the ship in order to retain you as a customer. They provide additional incentives to make it more likely that you would go on another cruise.