This is what I do, and it works very well, albeit time consuming.
I first print out the hours for each park the weeks I am there. Then, I download the TGM empty itinerary (sorry, don't know where it is) into my computer in word. I then "map out" on scratch paper what my tentative dining schedule is going to be determined upon park hours and best days.
I then make my dining ADR's (I did mine early in Dec. for late May..got everything I wanted BTW).
After ADR's are made, I do a daily breakdown of activities. This includes meals, events (Spectromagic, Wishes or other events on that day) park hours and basic itineraries.
I do this for every day of the trip. Once I have a basic idea of what and where I'm going each day, I do some tweaking as necessary (Dining CM's will vouch for my tweaking ability

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I then put every day into the empty itinerary so I can have a 1 page look at what is going on. Then I down load the weekly (by day) itinerary from TGM (again, don't know where it is, sorry hard to navigate for me sometimes) and do a detailed daily itinerary (which is usually about 8-10 pages for 10-12 day trip).
I then do a separate sheet with all ADR's, times and Confirmation numbers on one separate sheet.
I add lots of other stuff to this folder BTW (like special events, Flower & Garden Festival & Star Wars weekends are on during our trip, so I have a "special event" section as well.
I fully admit I need help with my overplanning obsession, but it makes for a GREAT vacation!!
If I can help in any other way, just let me know...Stephen King wants his pen back
