I have my binder separated into the following sections:
1) Budget: I keep my master budget sheet in here which I create when first planning my trip to get approx. total cost, plus daily budget recording sheets to see how I actually end up.
2) Itineraries: weekly itinerary plus daily itinerary sheets for each day I am there, plus priority seating confirmations, coupons and anything else I need.
3) Confirmations: Plane confirmations, hotel conf., rental car, etc.
4)Miscellaneous: my section for lists! packing list, grocery list, places to eat, hidden mickeys, things not to miss, what to take to the parks, etc.
5) Tips: anything I find on these boards that I don't want to forget go here!
6) Maps: maps of Orlando area, International Drive, individual resort maps
7) Future trips: my favorite section

I keep notes on different resorts I'd like to stay at, places I'd like to eat, things I'd someday like to do. When someone mentions a great room # they had, I record it here for future use!
I also keep my tickets in my binder, plus Disney dollars, maid-tipping envelopes with money already inside, gift certificates to use, blank paper for note-taking, etc. I'd love to start a journaling section of each year's vacation....
I LOVE my notebook

and read through it often

I keep it a secret though from friends and family since I would never hear the end of it if they saw I actually keep a notebook on Disney!! LOL!
Kimberly