Using TGM's least crowded day charts and making good use of some of his viewing spot suggestions and being able to prepare my son with his MANY pictures of everything from parades to resorts to attractions was a HUGE help!
We have renewed for our 4th time with TGM for our upcoming trip. Although you can use his site to plan down to the minute...I think the greatest value is planning where to be at a certain time (by that I mean in which park) and even more importantly, where not to be.
Good luck! Have fun at WDW!!