Attending NA LCS Quarterfinals

My family and I are going to be in Los Angeles for the NA LCS quarterfinals and we were hoping to attend the games on August 8th. Unfortunately, tickets sold out before we got a chance to get them (it was a last minute trip for us, from the East Coast). Is there a standby line, or are some tickets reserved for in person purchases at the time of the event? Anyone have advice on how to attend?

Thanks!