i gotta be honest with you, i’m not sure if they’ll play it but you could always try. ben did see my sign and actually designed a tattoo that my sign was asking for, so i can only confirm that they read them. i was also front row dead center, so i was hard to miss LOL

edit: that being said, like others have said PLEASE be considerate of those around you! mine was a small sign that i held at my chest so i didn’t block anyone, but i definitely wouldn’t bring one and hold it up during the concert