where can i find out my past passenger number?

On the Carnival site, there is an area to research it based on some info they ask you. Look under your profile area, you'll find it. I guess I should mention that you need to register on there site if you haven't already. They were able to locate my numbers from 1988 and 2002!

When I went online and had to enter the "past guest number" I used the number from my Sail and Sign card....four digits. Can't think what the card calls it and I don't have it handy.

Folio # ?

Ok I think you have the same problem I use to have at carnival. Well sometimes even online you can not get the past guest number, so I just call carnival by phone, is a free number, and ask them for your past guest #, as soon as you have it enter the guest # in their site for online reservation, just an advice since you call them book them by phone you can get better prices that way, believe me I just save like $400 for my next cruise that way…