'At night we sing With or Without You'.
They have been camped outside the stadium in Mexico City for days and days.
At night they sing U2 songs and talk about the band. Last night they were listening in to the final rehearsals as the band ran through Magnificent, 'Crazy', Walk On, Zooropa and 'Real Thing'.
Tonight they will be first into the stadium and then right down the front for the show. Serious fans!