You should check out the opening for worlds 2019 - definitely the best! And yes, all of the holograms are visible to the crowd physically there, it wasn't edited in after the fact! (This is the link: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6QDWbKnwRcc.html ) Since you were asking, the girl at the opening was Bea Miller, girl at the end is PVRIS (pronounced Paris) and the song by her also has a music video you can watch, called "burn it all down"
all this? this was probably one of the lowest they spend because of covid and stuff you should give a watch 2019 or 2018 worlds openning, they had full stadium and live concert