Im taking a couple of teens to the o2 for a concert on tuesday, Im not sure what the best way to get there is? I think Im already resigned to having to sit/stand in a queue of some sort for some time but would like to know the least painful way to get there!! Do you have to get there for the opening supporting acts or can you just turn up for the main event ?! Can you tell Im not going for my own enjoyment....?!