Some Abu Dhabi hotels will have their star ratings downgraded under strict new classification rules being implemented in the emirate, reported The National. Within weeks, each hotel in the capital must display a plaque issued by the Abu Dhabi Tourism Authority (ADTA) showing its new rating, which will be determined by a long list of criteria. 'Some hotels have been downgraded,' Nasser al Reyami, the director of tourism standards at the ADTA said, declining to give details on how many and which hotels have been downgraded.