Too bad he won't remember it. I do find it odd that the things that made us incredibly happy back then we don't even remember. I was told I went to Disneyland at that age and I don't even have vague memories of it.
1st Amendment-Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
We took our kids to Disneyland the first time when they were 4 & 3 (they're 21 & 20 now). Their absolute favorite was also the carousel. They also enjoyed IASW and Casey Jr., but Alice scared my daughter half to death, so we stuck with the carousel after that. Must have ridden it 14 times!