Oh my goodness! How exciting for you! Ok ok let's see.
We love the Hoop Dee Doo revue! That's a great time and we usually do it on a non park day, its a great trip opener.
At MK, we love Liberty Tree Tavern for dinner, best charactures anywhere. Crystal palace is one of our favorite buffets and MK has the best counter service in all of WDW (we like Pecos Bills)
At MGM, we have tried all three of the Fantasmic dinner package places to eat and Mama Melrose is the hands down best place to eat of the three. We had a good time at the 50's Prime Time Diner, too.
At AK, we always eat at Donald's Breakfast way before park opening to beat the bottlenecking that always happens when the park opens.
At Epcot, if you can get a PS at Rose and Crown for 7-7:15 its a great place to dine and then stay for Illuminations. Another good place is Coral Reef. We arrive early and ask for a tank side table and the kids have their noses to the glass the entire time.
At resorts, we have a few musts:
Whispering Canyon @ WL
Cape May Cafe @ BC for dinner, seafood buffet is great
Narccoosses @ GF has the best dessert, Almond Crusted Cheesecake YUMMMMM
San Angel Inn @ Epcot is to be avoided at all costs.