Interesting point. One of the things I noticed as I was looking at the shooting script for ROTJ was that it had a good handful of scenes where people are waiting for shuttles to land, or walking across sets on their way to other sets or hanging around in sandstorms.
I recently made the criticism of Jedi that it was too slow paced. I am taking that back to a degree. In a rough cut form, it could have been much worse.