Parookaville 2019 – one of the largest, if not the largest, German music festival. This multi-day event took place in July for the fifth time at Airport Weeze, and set a new record by selling more than 85,000 tickets (in just a few hours). Guest-One was there for the first time this year with its Crew Control solution – because the rise in the number of visitors also means a rise in the number of people behind the scenes.