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*Valid until 31 December 2016 upon request and subject to availability. Only
in conjunction with a meeting at art’otels or Park Plaza hotels. The hotline is
open Monday to Saturday from 7.00a.m. to 10.00p.m. Calls are charged at 20 cents
per minute from a German landline and maximum 60 cents per minute from
mobile networks. Ticket Prices for international calls on request.