Before "One More Light", Mike explained that this was the first time that an album had been named after a song on a Linkin Park album and it was because the song embraced the core of the album, so they wanted to put extra attention on the track.
Chester placed the flag of Peru on his micstand to sing "One More Light".
After the intro pause on "In The End", instead of restarting the first verse, the band just picked up at the end of the first verse with the crowd and continued the song.
Other Notes
Linkin Park announced this show on December 9, 2016: "We are thrilled to announce our very first show in the beautiful city of Lima, Peru. Come see us May 11, 2017 at the Estadio Nacional. Full details at LinkinPark.com"
This was Linkin Park's first concert in Peru. Fans camped out for the show over ten days in advance. The show sold over 20,000 tickets in the first day of sales and completely sold out in less than a week. On March 14th, additional tickets were released for other parts of the venue and those sold out the night before the show.