I had a full grown employee that had his honeymoon in WDW. Until I told him, he thought that they were live actors as well. So age has nothing to do with it. I think it depends on where one is sitting. The further away the more real they seem. One of Disney "gotcha" tricks.March of 1991 for me. First time on a plane as well. Loved it. I swore up and down to my mother that the Presidents in HOP were real men. I was 10 and a half, so, you know.
Loved Thunder Mountain. Splash Mountain would have been being built at that time. We missed all of Mickey's Toontown though for some reason. Loved the Carousel of Progress as well. Don't remember going on Tom Sawyer Island either. The first ride we ever went on was Small World. I also remember loving Pirates the best then as well. Talked to an elderly couple from France (I spoke very good french then) while in the line up for the Skyway and they told me about how Disneyland was opening up there next year.