Slipknot themselves will play two headlining sets on the cruise ship, which sets sail from Barcelona.
Tyler, the Creator, The National, Beck, Bauhaus, Bikini Kill, and more are also on the bill.
The daytime event will also include a picnic cooked by a celebrity chef.
Rock camp experience will feature jam sessions, forums, classes, and special activities.
Annual Austin festival also promises Kurt Vile, Devendra Banhart, High on Fire, Chelsea Wolfe, and more.
Post Malone, Vampire Weekend, Lil Wayne, and Janelle Monaé will also perform at the Vegas festival.
Las Vegas event brings together music and social impact with a theme of Protest, Self, Brave, and Sex.
Seven-stop tour to feature Pennywise, Suicidal Tendencies, L7, H20, and a bunch of craft beers.
The trio of acts replace Blink-182, who canceled their appearance due to health reasons.
Pharrell Williams, Coldplay’s Chris Martin, and Usher also set for the celebration of Nelson Mandela’s centennial.
The Knife’s Karin Dreijer is on the bill for this year’s Lightning in a Bottle festival in Bradley, California.
Future Islands, Julien Baker, Moses Sumney, and Alvvays among the other acts set to join The National in their hometown of Cincinnati.