I'm pretty sure it was Bambi. It might have been Dumbo, though.

Both are horribly emotionally damaging.

My Grandfather took me to see Bedknobs and broomsticks when i was about 6.

The Empire Strikes Back

The first film I saw in the theatre was Sleeping Beauty (because my older sister wanted to see it).

Batman

I want to say Willy Wonka and the chocolate factory. But it was at a drive in

It was a muppets movie in the late 1970s or early 80s

I think I saw the "Great Mouse Detective" in theaters.
But I'm not sure if my memory is legit on this :|

Can't remember any of the drive-in movies, I just was way too young. Yet I do remember one of the first actual movie theaters movie.

That would be Planet of the apes 1968. I was not quite 9 years old.

Towering Inferno 1974
Skyscraper caught fire

Star Wars, A New Hope.

E.T.

Return of the Jedi

Ghostbusters

Teenage mutant Ninja turtles! The 90's version 😃

Mrs Doubtfire I think, prior to that always rented movies

The life and times of Grizzly Adam's

The first one I recall , was snow white.

Jungle Book.