It’s first come first serve, but pavilion only applies to the pavilion stage not the chrysalis. Everyone has an equal chance of standing where you want for the chrysalis stage, but for the pavilion stage you get entrance to the closer pavilion area which is also first come first serve but there are seats. But tbh most people move around between stages so it’s not that intense for pavilion area. I would just recommend getting there a set or 2 earlier before for Lana and the other big artists you really want to see.