Did this on the Liberty this past April. If I remember right, it was a one hundred dollar deposit towards a future cruise. Then they will give you a certificate for up to one hundred dollars in on board credit. The amount of OBC depends on how long the cruise. I believe they give you up to 5 years to pick and book a cruise. If you already know where you want to go think you can book it then too. Just mail in the certificate.
What suprised me the most was walking up and the girl behind the counter speaking in an American accent. I'm curious does anybody know if they are pvp's? Employees from Miami? Seems like a nice job if one can get it especially if the choice is working on a ship in the Caribbean or an office cubicle.