Instagram/Morgan Wallen Music Morgan Wallen calls out flaky celebrities for bailing on his Las Vegas concert walkout at the last minute. May 3, 2026 AceShowbiz - Morgan Wallen faced disappointment during his Still the Problem tour stop in Las Vegas when several celebrities backed out of his signature concert walkout at the last minute. During his first of two shows at Allegiant Stadium on Friday, May 1, the country music star addressed the crowd, expressing frustration at the no-shows. Fan-recorded footage captures Wallen saying, "Y'all got some flaky a- people in this town.