Yep, I was on a 777 and when I left the plane, I had to walk from the back to the front, and it did not feel like it was a long plane. The 747 has the same feeling, but the 757 has always felt very long. Wonder why?
Movie sets must have room for the camera so in the case of an aircraft interior- only part of it exists. The viewer is looking at the seats from a distance equal to being outside the craft. So we walk inside a real one and wonder where the rest of it is.
On the outside they seem huge when taxiing close but on the wash rack when I get real close they seem sort of small. I don't know why.