During E3, Nintendo is gonna have it out at the Belasco Theater downtown. The Super Smash Bros. Invitational 2018 & Splatoon 2 World Championship will be happening over two days, June 11-12. Nintendo is letting anybody attend, you just gotta line-up outside. It's first come, first served. Heads up though, they"ll only be giving out 405 passes a day.
Here's the details:
Location: Belasco Theater, 1050 S Hill St, Los Angeles, CA 90015 (“Venue”)
Dates: June 11 and June 12, 2018
Event Start Times: 3:30 P.M. PT on June 11th, 1:00 P.M. PT on June 12th
Doors Open: 1 hour before Event start times
Lines Open: 3 hours prior to the Event start times