Silvretta tour - denied access to the Ischgl lift system

Hello all, just completed a tour in the Silvretta and thought I'd let everyone know of an issue we ran into. We were hoping to use the Ischgl lift system to start our tour but were unaware that in late March Ischgl runs a "concert on the mountain" - unfortunately our start date coincided with the date of the concert (George Ezra this year). They were searching everyone's bags at the cable car entry and we were not allowed onto the lift system due to ice axes and water bottles. So we had a long walk up to the Heidelberge hut instead. Luckily we got our day pass lift ticket refunded as it is extra expensive on the concert day.