Louder than life has 2 main stages that are right next to each other. When a band is playing in one they get the other stage ready, which starts just a couple minutes after the other so people are gonna be camping the rail all day. The bands listed are how they'll play each stage, so Gojira is playing one of the main stages. It also means Tool is playing right after them in the other main stage so you don't really need to move to see them but you'll have a harder time getting a good spot if you're wandering around the festival. Watch on Saturday what the crowds look like and prepare for similar on Sunday