I recently found out the way of access the Future Party rooms again.It was told to me by EchoOO6 from Clubpenguinbounce.com .If you want a proof see below:
First go to http://play.clubpenguin.com/?rm=851#/login . Don’t use the map because it won’t work. The music’ll be Operation:Blackout.The Robots will not work. In the Dance Dome, there’ll not be the Space Squid. The Rooms of destroying Meteors, Microbots and Protobot’ll no longer work.You’ll not be having Meteor Points.
Active CP Cheats Staff,
(Credited to EchoOO6 from Clubpenguinbounce.com )