The Hollywood Stock Exchange (which, in my opinion, is about as good a predictor as you can get regarding how much money a film is going to make - particularly when you get close to the release date) is predicting Tangled to make about $95 million domestic. That'd be 10% less than the Princess and the Frog; which I have to believe Disney would consider a disaster. Personally, I think that number makes a lot of sense - Harry Potter is likely to suck up every kid dollar until Narnia and Tron in two or three weeks from now (and it might even steal a significant amount from those two films).
I think even Disney knows Tangled is in trouble - every decision they have made (changing the title, marketing it as a "Flynn Ryder" film, not even mentioning the name Rapunzel in commercials, releasing it a week after Potter) signals to me that Disney believes this is a film that people don't want to see right now (rightly or wrongly).
I think even Disney knows Tangled is in trouble - every decision they have made (changing the title, marketing it as a "Flynn Ryder" film, not even mentioning the name Rapunzel in commercials, releasing it a week after Potter) signals to me that Disney believes this is a film that people don't want to see right now (rightly or wrongly).