The times we have flown with the kids they haven't asked for id. Most airlines we use require you buy a seat for children over 1 year. We flew last year with Delta and had to purchase a separate seat for our 2 year old. :)
I have to say that my 5 year old loves the power rangers! He watches the classic ones as well as the new ones on Disney channel. I do not care for them. He will be thrilled to see them at Disney.
I love everyones stories! I had the pleasure :( of being stuck on the Mission Space ride. They had us sit in the capsules until it was ready, it took about 10 minutes. I am not afraid of small spaces, but that creeped me out. :)