I can't really remember what the production I saw was like.

It was a regional, and the girl playing Liesl was fabulous. She portrayed a slightly shyer, more naif Liesl than Charmian. Still, she looked a lot like the video.
As for the gazebo scene, I think it was actually performed on a single bench. If there had been a gazebo, it would be a little hard for the audience to see because of the theatre's setup. Also, there was a song that wasn't in the video, sung by Max. I'm glad I saw it, it was very good.
