We went on our first Disney trip last September (with DS6 and DS2) and had a great time! We stayed at the DLH, and the boys loved swimming at the Peter Pan-themed pool. Even when it was too cold for me, they insisted and cajoled DH to take them in the evenings for 20 minutes or so. Brrrr!
DS6's first ride was Splash Mountain (I was

) and tried to talk him out of it, but he insisted. So DH took him on that while I took DS2 (a big Pooh fan) on the Adventures of Winnie the Pooh ride right across the path. Those two rides were the big hits of the whole stay!
DS2 loved the Fantasyland rides as well (especially Dumbo and Peter Pan), and DS6 loved BTMRR, Soarin', Indiana Jones. Both boys also loved the carousels, Buzz Lightyear ride, and POTC.
We did the autographs and photos with characters, as well as two character meals (Goofy's Kitchen dinner, and Lilo & Stitch breakfast), and those were a big hit. We even stood in line for princesses (we were often the only boys), but they didn't seem to care, and got lots of attention from the princesses.
We ate breakfast cereal in our rooms, but most other meals in the parks, and brought our own snacks and water in. We tried the Dole Whip Float (yum, but very sweet) and the Dole Whip (just the ice cream, sooooo yummy!)
We had a lengthy stay, but still couldn't see everything! I wish we hadn't missed:
Dot's Puddle Park (in Bugs Land, DCA), I think the boys really would have loved this!
The Golden Horseshoe (I think it was closed at the time of our visit)
The Tiki Room show (very busy every time we happened by)
The Aladdin Musical (DCA) and the Aladdin show (DL), both closed at the time of our visit
Parades and fireworks were awesome! Turtle Talk with Crush was amazing!
September was a great time to go due to the very low crowds. I think it was much easier on my young boys because they didn't have to stand in horribly long lines. However, many of the attractions are closed for the low season, or shut down for holiday overlays, so you miss out a bit by not going when the parks are busy.