We just got back from WDW with our DS who is 20 months. He was so well-behaved I was completely flabbergasted. I really thought it would be tougher to have him at the parks. It was like he knew we were going on a vacation and he was on his best behavior.
1. For the flight he slept the whole two hours, no fussing at all.
2. He ate all the same meals we did. We bought a few of his own, but other than that he shared ours. We had plenty of snacks, cereals, juices and water that we packed every day.
3. Originally we had planned to go back to the rooms at his normally scheduled nap times, but that went right out the window the first day and he slept in his stroller. I am amazed at how much noise was going on and he just zzzzzzz'd away.
4. He was so entranced with all the people, noises, lights, characters that he just sat in his stroller and enjoyed the ride.
5. We took him on a few rides that we would not do again. First was the Movie Ride. It was no problem until they started to shoot guns. We also went on the Pirates of Caribbean

and he again disliked the firing of the guns off the ship. He loved Pooh, Its a Small World, the night time parade, Toon Town, and Camp Mickey. Play House Disney is a must see at this age. We had to go twice. We also brought him to see the Lion King, which once he figured out who/what was making the loud noises, he really enjoyed himself and danced.
6. Fireworks are a no deal for us. He can not handle the fireworks.

We had to hide indoors until they were done.
7. To be honest we bought a lot of toys. Our son would see a stuffed animal or truck and just suckered my husband everytime.
8. I felt comfortable letting our son walk around in Epcot and Animal Kingdom, holding our hand of course. Magic Kingdom and MGM were just a little too busy to have a 20-month old setting the pace.
9. He truly loved ALL the characters. He hugged and kissed all of them and loved being in their presence. We had to pick him off of Pooh-DS decided to sit into his puffy stomach.
I am ever so happy we took him at this age. It was so great to see him enjoy even the smallest things; the rides on the Disney bus, the monorail passing by, the songs playing though out the park. Will he remember any of it, probably not, but I am so happy that we took him this age. You will have the best time and love to see the elation and excitement

on your child's face. Have a great time!