Personally, I quite dislike the ladder party as they tend to block alot of ppl. To me, I go event I would just try my best to take photo in any best possible position if really no have then LPPL.
Offical PG have the freedom to move around in the front area unblocked, their pictures have to be good cos the organisers paid for them. but public PG, we dont owe anyone our pictures but ourself and going to the extend of using a ladder to get unobstructed picture, in my own opinion is a little insensitive to the other member of the public.
even if i do get a front row during shoot, I do note other PG beside or behind me and try to stay low and allow others to shoot around or over me. and also try to keep my chicken wing in check when shooting portriat as I know how irriating it is when as a PG getting block by chicken wing.
but we each have our own opinions and own expectation of our own pictures. I would say I hate ladder party who are in the middle or front of the crowd, but I dont hate the PG in person using the ladder, its his choice to use it. I am only a public PG just LPPL and make the best of my position lor. I would really hate more that ladder party is PG that is totally inconsiderate and make it like the subject they are taking (not paid models but model in event) should pose for them just becos he want to shot them, squeeze among other PG just to be infront and directly block or hinder the PGs that are already in the area.