I don't really have a favorite park. There are cool things at every one. I love em all!!
My favorite resort is the Boardwalk. We've stayed there the last 4 times we've been to WDW. It's a beautiful resort and there is SOOOOOO much to do there, especially at night. You can ride surrey bikes, shop, dine, watch the night entertainment (magicians, comedians and more) and best of all.....eat crepes on a stick!!! (yummie!!)
Disney Quest is a ton of fun! There are so many different games you can play. You can make your own rollercoaster and ride (very cool!

) or my fave, shoot cannons at pirate ships in the 3D Pirates of the Carribbean simulator.
E-Nights are very fun as well. MK is only open 2000 or so people and the open pretty much all of the popular rides: Splash, Thunder, Space, Buzz, Haunted Mansion, etc. I went on Splash twice in a row with out getting off cuz there wasn't anyone else in line. And when we were walking out, Mickey, Minnie, Goofy, Pluto, Chip and Dale were all by the castle, so I got my picture taken with all of them. It was so exciting cuz when you see the characters during the day, they're always mobbed with people but since there are a limited number at the e-night, there was only about a 2 minute wait.
Well, hope this helped! Have a great trip!