Mine was also a senior class trip, as part of an overall tour of California. Summer of 1968 and I was 17. Little did I realize then how much the Mouse would become part of my life!
June 1975 - MK - I was 16, new to Florida, and I was on a date with my future DH. It was very romantic.
DH witnessed a "tube top" incident on Space Mountain, but it was the early 80's. He was waiting at the end of the ride with baby DD while I rode SM with DS. A group of girls hopped off SM and one girl's tube top was down around her waist.
She was mortified and my DH mentions it every time we talk about WDW (which is practically every day).......
I was in first grade. We went in April, 1972. We went to WDW. I remember loving Small World, Jungle Cruise (although the snake freaked me out), Peter Pan and Snow White (also freaked me out). I can remember my parents clearly saying over and over "It's so clean, it's amazing". That's where it all began for me.
October 1975, I was 22. Just a day trip to MK. It was really nice! My first (and only) DL trip was October 2001. Hmmm, there seems to be a patern, maybe October 2005 for Disney Land Paris or Tokyo Disneyland, or Hong Kong........