Both shows have some different songs.
if you are going all the way to
paris go to both as the cost of tickets don't really matter. After you have paid to grt there.

upstairs is Balcon. Seats are reserved but don't get back at the sides columns in way. orchestra debout is standing. orchestra is sitting and you'll have seat numbers. 2015 downstairs was standing both shows. 2014 Friday was sitting Saturday standing.

Your tickets are standing. people line up all day but let you into a secret. We went in at back of the queue go to the left of the theatre where the toilets are and past those there are steps going down next to the stage. If your ticket has seat numbers then there are seats We have done both. Enjoy ...