Madonna will put your head on a pitchfork if she sees you in there with a camera.  No, I'm not kidding.  Or worse yet, they will take you camera away at the door (as they should) or if you came by subway you won't have a car to go stash it in when they check you out. 

A redcarpet pass will most likely get you into a restricted area with another pack of photographers, and you will most certainly only be allowed to take photos during the first 2 songs, before she starts to sweat. 

Go to the concert and enjoy it.