Well the estimated take from the holiday weekend are in from Box Office Mojo. The opening weekend take is $40 million and it goes up to $57 million if you add in the premiere and Thursday take.
What does that mean? Well to put things in context, the Adam Sandler movie "The Grown Ups" took in $40 million it's opening weekend and that's just with a Friday-Sunday non-holiday opening. And movies with comparable budgets like "Iron Man" and "Spider-Man" had weekend takes of $90-100 million.
"TLA" also had an almost 40% drop in interest from Saturday to Sunday. That could be because of the festivities that are going on for the 4th of July, but considering you have people going back to work on Monday, most of the people who wanted to see it probably have and two big name moves coming out this week, I expect to see the drop go down even more.
It's out of 'bomb' territory, but it also isn't in 'blockbuster' territory either. It has a ton of negative press both from critics and fans and has essentially under preformed for a film that was being touted as a tent pole film. It's in the same realm as "Chronicles of Narnia" which was well reviewed with generally well received by fans/audience and which got a sequel, but was dropped by it's main distributer (Disney) due to what they considered low performance. It's also in the same range as "Batman and Robin" which was also savaged by critics and fans and who's director was directly blamed for halting any superhero movies being made in Hollywood and who's career hasn't recovered because of it.
We know it has to make $280 mil to profit and we also know that they have to make $580 mil before they can reach that profit because they have to give the theater's their take (ie, overall earned is $57 mil, but that's before the theater's take their cut).