Rafa
I'll probably spend all day/night doing that when we go...as a spectator. 
When I took DD to see 1D, when they came on stage I couldn't stop shouting "look ! its Zayn ! look ! its Liam !" etc...
Being a very cool tweenie she just yelled "I KNOW, Mum". She is also mastering 'Mums withering 'look''.
I am easily awed.