Tips:
Plan on using the train to avoid crowds in getting to other lands and save on leg and feet wear. (Do note that getting BACK on the train at Toon Town Station is the busiest/hardest to do, so maybe only get OFF there.)
Take the monorail from Tommorowland and get off in Downtown Disney. Have dinner at Rainforest Cafe or go to ESPN, then work your way back out of there and hit DCA, or go back to do the front part of DL park. (or you can do this in reverse and go through DTD and get on the monorail to travel to Tomorrowland, with your park ticket of course).
The second Fantasmic show is the only way to go. People can't stake out spots so far in advance, plus there's less people.
Read up on trivia so you can look for fun stuff while there and educate everyone else. (I think there is a web site about hidden mickeys somewhere too.) Look through the art gallery above Pirates of the Caribean.
Listen carefully to sounds in various places. One of the better spots is in NOS, near the bathrooms and behind the shops and restaurants. You can hear chimes, music, and talking (like it would sound in the old French Quarter) supposedly coming from upper balconies.
Don't bother with those walkie talkie things (my opinion). Everyone has them and you can't get away from picking up other peoples calls/conversations, or having teenagers butt into your conversations, say rude or inappropriate things, etc., Plus it is often so noisy someone in your group won't hear it ring. Use your cell phone if you absolutely have to, but try to do without and just enjoy the park leisurely.
Watch parades in DL from the town square/main street area. This is also helpful if you are going to head out of the park immediately afterward. The views are just as good there and it tends to be less crowded too.
Watch the ELP in DCA near the front of the park from the seating area of the train car bakery place. Get a seat a bit early and have dinner from around the corner at the Taste Pilots burger place (awesome burgers and fries too BTW).
Take lots of film too, there's lots of good photo opportunities you'll want to remember
