The "Passporter" is a guide to Disney World that has information about the resorts, park, dining, and everything else.
At the back of the book are pockets to put your trip information in and to help plan your trip.
I bought my first in 2001 and loved it so much that I bought the 99 & 2000 edition. I finally upgraded to a Deluxe edition. (There are two different editions - spiral bound - everything all together; and a Deluxe binder bound - where you can take things out or add things to it)
I really love my Deluxe edition. Once we start planning a trip, everything goes into it. We keep our annual passes in it because it has some slots in the binder for different things. Once we are finished with one for the year, and have received the new inserts, I take the old pages out and tie them together with string. That way everything that I have put into the pockets stays there. Once we get to the resort, we grab maps of the parks and put them into the pockets for the day that we went to that park.
All the information about our priority seating and other extras I write on the pocket for that day.
In the dining section, they have a page to plan your priority seating and put all the information once you have booked it.
It really is a great planner.

We use it as well as Birnbaums when we plan trips.