I visited WDW for the first time about 10 months ago, one of the highlights was seeing the Carousel of Progress for the first time since 1971 or early 1972. Back then, Disneyland had the Indian War Canoes - the only ride there that was powered by the people, but the first task was teaching the people how to paddle.
Another highlight was being on the behind the scenes tour of the WDW Railroad.
I was attending summer school in 1969, and remember we got July 21st off as celebration for the first moon landing the night before.
Other reminders of getting old - distant memory of riding the Olympian Hiawatha from Seattle to Miles City at 33 months, reading about the demise of the North Shore in 3rd grade, taking the AT&SF (NOT Amtrak) San Diegan to Disneyland, seeing an Espee freight train roll by the Richmond BART station pulled by a brand new SD45-T2, riding the North Coast Hiawatha and seeing remnants of the catenary on the adjacent Milwaukee line.
I was born the day that SP #1 was dedicated for service on the 3 ft gauge Owens valley line.