Last night, my group’s Stargate SG-4 campaign had a double feature: Our GM, Don, ran two short adventures back to back.
We took a dinner break partway through the first one, and then a levelling-up break before starting the second scenario, and it worked really well across the board. We weren’t too tired to do two sessions in a row, they didn’t feel rushed and we had a great time.
Don was looking at the double feature as a way to make up for calling off a couple of previous sessions (which was very nice of him), but I don’t see any reason that this approach wouldn’t work as a change of pace for any group.
It was good stuff, and I’d love to do it again sometime. Have you ever tried a double feature?