If you are getting to the park at 2 and plan on spending the next day there this is what I would do.
Afternoon Day: (Adventureland/Frontierland/Liberty Square)
1. Get a Fastpass for Splash Mountain
2. See a show of the Country Bears (if you will be going in by 2:15)
3 Find a place to watch the parade in Frontierland. (3pm parade- finished about 3:20)
4. Get a Fastpass for Thunder Mountain
5. Ride Splash (4:00)
6. Ride Pirates (4:30-4:45)
7. See the Tiki Birds, Swiss Family Treehouse, and Alladin's Carpets (maybe 5:45)
8. Get a Fastpass for Jungle Cruise (if there isn't a wait just ride it)
9. Ride Thunder Mountain (6:10)
10. Walk through Frontierland up towards Liberty Square
11. If you don't have a Fastpass get one for Peter Pan (it is just beside the Columbia Harbor House.
12. Ride Haunted Mansion (6:30)
13. Walk through Fantasyland and if the wait is not longer than 15 minutes see the Phiulharmagic. (7:00)
14. Head over to the Crystal Palace for Checkin. (if you have any fastpasses left ans you have time use them now- otherwise after dinner use them)
15. Enjoy your dinner and then find a spot to watch the fireworks.
Day 2 (Full day starting at 9am)
1. Be at the gates of the Magic Kingdom by 8:30 (enjoy the preshow that starts about 8:50)
2. Go straight to Dumbo.
3. Get a Fastpass for Pooh and ride Sapce Mountain and then Buzz and Astroblasters.
4. If your kids really enjoy characters head over to the toontown opening at 10am.
5. After visiting with characters head back to Fantasyland- ride the teacups and then Pooh
6. Get a fastpass for Peter Pan.
7. Ride Small World and visit Ariel.
8. Watch Philharmagic (iof you didn't the night before) and then ride the Carrasel and Snow White.
9. Enjoy lunch somewhere.
10. Get a fastpass for Stitch (if you want to ride it).
11. Ride the TTA and the Carrosel of Progress.
12. Catch any of the shows you want to see (Belle's story, Castle show)
13. For a cool place to ride out the hours of 1-3 try the Hall of Presidents and then head over to Tom Saywer's Island.
14. Enjoy walking on Main Street and go back to any ride you want to see again. walk around and look for the little details (read the main street windows, listen to the music in the lands, look at the lampposts).