Probably 'Lili'; I was 3 or 4, & I remember crying because it was sad!
Then next would've been 'Fantasia'. I was hiding under my Father's suit front lapel, during final scene, as the 'Devil' scared me to bits! The music didn't help! ('Night on Bald Mountain', which came to be a favourite when I was older!)
Oliver. It was a nightmare. My best friend and I were with our big sisters, also besties, and they sobbed LOUDLY through most of it. We were mortified. I think we were twelve at the time. Everything is mortifying when you are twelve. ^_^
I recall my Grandmother taking us to see Bambi. I cried and cried. It is probably the first movie I watched all the way through.
I had been at the drive in with my parents before that and remember falling asleep watching Julie Andrews in Sound Of Music