The choreography; the efficient use of stage space, props, costumes and a small cast; the length of the show.
What I didn't like
It all worked!
My overall impression
Earth to Karen was such a delight! The story was great, the actors were committed and engaging and the premise was familiar and funny. I laughed out loud throughout the show. The live band was lovely and the performers made great use of the space. The musical numbers and the choreography were exceptional as well. This is a must see!