Wembley - standing at front?

[Stu]

Hi - i've read about a LOT of gigs on this tour where people have just gone and stood at the front, rather than in their seat.
How easy is it to do? Does it not get in other people's way?
I'm desperate to get a bit closer to the action, but don't want to risk the wrath of security or spoil others enjoyment / view.
How has it been for you guys getting to the front?

Damn these seated gigs !