A Britney concert is going to be however fun you want to make it. It's very fun singing along to the couple songs I knew a few words to but I just couldn't get over the lip syncing. It was so obvious and when she is just around and moving they was no difference in her voice. I know it's a show and not a concert but something about Britney just running around on stage just moving her mouth doesn't do it for me.
Also the whole audience wasn't that excited and didn't have that much energy and I think this is because of the wait time between some of the songs. There were sometimes a good amount of time between songs while everyone is just waiting there.