There was no wind and there was a lot of standing room.
Ok then. Anyone could do it apart from people that have a fear of heights.
There you go. I'm not too good with heights. I found both those videos literally terrifying. Theres no way in hell I'd ever do that. I've had many dreams about being up high and I always shit myself. Sometimes literally.
The second video is just all kinds of messed up. Theres no amount of money in the world that would convince me to do that. Seriously.