American Idol has live coast-to-coast shows with live votes at the finals stage, so two contestants will go home both on Sunday (cut to 12) and Monday (cut to 10).
I look it up a bit more and Bryan is a Leader Accomplice of the Harbord Ministry Who We Are - ROGUE Journey And the Harbord Ministry is refer to multiple time on the band page. Home - VOTA (votaband.com) So the date is probably been setup years before and it's not a concert. On the Rogue Journey FAQ they ask participant to commit to at least 2 event separate by a year to complete the journey. So I guess there is a high possibility that Bryan wont be there and it's just old date.