Celebrity guests appearing on Jhalak Dikhhla Jaa 7 have been told one thing clearly. They must adhere to strict discipline. Reason: Madhuri Dixit-Nene, who is one of the judges on the show, has to pack up by 8.30 pm come what may. The senior Bollywood actress and television judge has her pack-up time clearly written down in her contract. And she will not change it for anyone. But one hears, she is equally disciplined about her sign-in-time. In other words, Madhuri is someone everyone wishes to emulate.