The show was well received by New York Times’ Jon Pareles (“The concert is a display of energy and nutty inventiveness, with Madonna costumed as everything from baton twirler to folk dancer”) but less so by local critic Dan DeLuca (“Madonna: Ripped, ready and reaching for relevance”).

Also mixed? Exactly how tardy she was taking the stage.

Madonna’s set began at 10:30 p.m. which, according to Pareles, was an hour after the industry-standard start time of 9:30 p.m. It was preceded by a DJ set from producer Laidback Luke who opened the show with a set of remixed Madonna tunes. The Material Girl apologized to the crowd, saying it was due to last-minute adjustments for the American debut.

“I wanted the show to be perfect for you, because my fans deserve it, and quite frankly I deserve it,” she said.

“The details have always mattered to Madonna, and in this new extravaganza they add up,” Pareles said. “The effort is visible, but so is the delirious impulse behind it.”

DeLuca simply said she “apologized for the lateness of her appearance,” provided the quote and moved on.

But Philly’s local CBS affiliate must have gotten a different schedule, and so did some fans.

“Many Madonna fans are wondering if the ‘Material Girl’ owns a watch after she took the stage late,” it reported. “The concert was scheduled to start at 8 p.m., but Madonna did not take the stage until about 10:30 p.m. Making matters worse for fans was the fact that the opening act was simply a DJ spinning some tunes.”

One fan told Eyewitness News she and her 10-year-old left at 10:15 because it was getting too late, and another said she had to leave early because she had a baby sitter come to her house at 6 p.m.

Philly Councilman Jim Kenney tweeted, “Yo Madonna! It’s 10:15. Some of us have to work tomorrow while you sleep ‘til noon with cucumbers on your eyes.”

The affiliate said her apology was met with boos. Twice.

Was Madonna lounging backstage, not caring? Probably not. A representative for Live Nation told Pollstar that Madonna’s website said start time was 10 p.m. and she went on at 10:27 p.m. after rehearsing for six hours the night before, a two-hour soundcheck and an adjustment from European stadiums to U.S. arenas.

Also, nobody appeared to complain about the energy or spectacle of the show, which featured mostly her latest dance music, interpretations of her earlier material, flying percussionists and more than three-dozen performers.

She apparently still needs to work on her guitar moves, though.