Arctic Monkeys, Jack White, The National, and Vampire Weekend all play different days, so if you were hoping to catch the big indie/alternative rock names and just go one or two days, that's kind of a bummer. St. Vincent the same day as Vampire Weekend is a nice touch though.
In case you were wondering if it was possible for the stacked Psycho Las Vegas 2018 lineup to get even better, the answer is yes. Danzig will headline with his only 'How the Gods Kill' set in the US of 2018.
The STACKED lineup also includes Dimmu Borgir, The Hellacopters, Witchcraft, Sunn O))), Enslaved, Rocket From the Crypt, Goblin, Eyehategod, Pallbearer, Integrity, Today Is The Day, and still tons more.