I remember the motor boat cruise... and the last time I was on that was in 1993 when I was 7. I loved it. And my whole family always loved to tease whoever was sitting in the "driver's" seat: "Hey- where'd you get your driver's liscence, anyways? Toys R Us?" So much fun!
And even though I never was able to experience it, I do believe that it was "Adventure Thru Inner Space" (no 's' after Adventure and not 'through', but 'thru'). Correct me if I'm wrong, but the anal o.c.d. freak in me is telling me this. If I'm wrong, well... then I'm wrong.
One thing I never was able to go on, despite it being ever present through my childhood, was the Skyway. Never rode it. Wish I could go back in time and go on it.
One ride/show I wish I could remember (because my mom did take me on it), was America Sings. I was 3 when it was closed. Sadness... lost memories of what I now know to be one of the greatest AA attractions ever created. At least there's YouTube!