I think the last film I saw on a 70mm print was E.T. at the MGM / Cannon Cinema Aberdeen ??? I think.

I love the 80's films

That reminds me,I saw E T in 70 mm in the Cannon Cinema Aberdeen.
With my daughter Angela she was 3 years old.

Our family saw it twice in it's original release. Once at a walk-in theater and once at a local drive-in. I was roughly the same age as 'Elliot' played by Henry Thomas (I was 11). It was a magical film.