The tour is to begin Tuesday night in New Orleans.
"You can expect spectacular-ness," Usmagazine.com quoted Spears's manager Larry Rudolph as telling Ryan Seacrest on his KIIS-FM radio show Tuesday. "We ran the show twice yesterday until 2 or 3 in the morning, and it was amazing ... perfect. She goes full-speed the whole show -- about an hour-and-a-half. It's pretty intense. There's only one time where it slows down -- with two ballads in the middle. This is a full-blown, full-out Britney Spears show. It is a pop extravaganza. It is everything everybody expects from her -- and more!"
Rudolph boasted about the show's costumes and revealed the production will feature circus performers, aerialists, dancers and martial artists.
Usmagazine.com quoted the manager as saying Spears is "a little" nervous as she prepares for the tour.
"She has this nervous energy. She's got this way of channeling it," Rudolph told Seacrest. "I've said to her before that if you were on a football team and you were going to the Super Bowl, they'd want you to be their quarterback. When it comes to game day, nobody brings it like she does. She takes that nervous energy and turns it into the most amazing show."