I think it will do well-- very well...
You have Zac Efram who is only in the biggest Television Movie of the last five years (if not longer) -- High School Musical
Amanda Bynes is also the whole DISNEY demographic and she can proove that she can do well with comedies. (She's the Man)
John Travolta who was able to help make a piece of crap like Wild Hogs into gold (and his first musical since Grease...Okay you may saya, Staying Alive or something but he did not sing in it...)
And then you have the black contingent w/ Queen Latifah who has also prooven to be a box office powerhouse.
And do not forget that at one time Michelle Pfiffer was one of the most famous actress (and still is considering she has not done a movie in over five years)....
I think this movie actually will defy demographics.
In the line for the free showing there were everyone from tweens to elderly people --
I think it will do better then expected.
"Whenever I get gloomy with the state of the world, I think about the arrivals gate at Heathrow Airport. General opinion's starting to make out that we live in a world of hatred and greed, but I don't see that. It seems to me that love is everywhere. Often it's not particularly dignified or newsworthy, but it's always there - fathers and sons, mothers and daughters, husbands and wives, boyfriends, girlfriends, old friends. When the planes hit the Twin Towers, as far as I know none of the phone calls from the people on board were messages of hate or revenge - they were all messages of love. If you look for it, I've got a sneaky feeling you'll find that love actually is all around."