A 20-Year Hannah Montana Nostalgia Celebration Doors: 9pm This show is 18+ All General Admission Tickets are Standing Room only IMPORTANT: WHITE OAK MUSIC HALL IS A CASHLESS VENUE. Please be sure to bring a debit or credit card. A 20-Year Hannah Montana Nostalgia Celebration Doors: 9pm This show is 18+ All General Admission Tickets are Standing Room only IMPORTANT: WHITE OAK MUSIC HALL IS A CASHLESS VENUE. Please be sure to bring a debit or credit card.