With the admission ticket on all buses, trams & trains (DB: RE, RB and S-Bahn, each 2nd class) in the VRR Rhine-Ruhr fare zone. Valid April 30th & May 1st 2017. Information at www.vrr.de and www.bus-und-bahn.de. An overview of the VRR area is available here.
The Print@Home-ticket entitles to direct entrance and to purchase a re-entry wristband.