I mean seriously AOG.
That was so...'wayward'.
But back to the question. People are camping out because they want to be part of a historical event.
Remember those pictures of Diana emerging from hospital with Prince William in her arms (and George Michael's hairdo on her head)? Well, I suspect those people camping out, want to be able to say in years to come, when images of this birth are on telly, "I was there".
Harmless fun.
There are things I would camp out for, and this certainly isn't one of them, but I shan't judge those who get enjoyment from this.