Which excerpt most clearly shows sentence variety?

We filed into the arena one after another. We were very excited! We were heading in to see our favorite band. We'd never been to a concert before.
Lights flashed in every color of the rainbow. Hands above our heads, we grooved to the band's most famous song, swaying and spinning.
During intermission, we went to the concession stand. After getting our food, we found an empty table. Before long, we heard the music start up again.
We hummed the last song as we pushed through the crowd out into the parking lot. Another group was also singing as they danced out to their car.