As is common with festivals of this size, Wacken Open Air received criticism for its hygienic conditions, prices, security personnel, as well as for the overcrowding and commercial orientation of the event. These points of criticism were addressed by making further substantial investments in the festival's fixed and mobile infrastructure. In 2008, the organisers also contributed 1,000,000 Euros to the expansion of Wacken's local outdoor swimming pool in order to make the festival even more attractive to the residents and visitors of the town.