As soon as the March 2013 cruises come out to book, I want to do so. What I am confused about is all this silver, gold, and platinum business. Are previous cruisers able to book before a first timer? How will I know when the cruises are available to me. If I go through an agent can I book as soon as they are announced? Are all the good prices gone by the time previous cruisers have booked (this is if they do get to book earlier)?