How long will they play for though? Prince has been playing the o2 for the last 3 weeks and it's just Prince. I bet thay play for no more than 1 hour, with all the other guff on the bill there wont be time to play for more than that.
I also can't believe that they are going to do all that rehearsing for 1 gig, they will do a world tour if all goes well at the o2.
I would rather see them after a few gig's as they will be tighter and rock harder.