For those taking flight, and landing at klia2,
you can take the aerobus 35myr one way, 2 hours to genting mushroom farm
there you can take another free genting bus 15min interval, to first world hotel lobby ... trip is about 15 minutes...
alternatively, you can take airasia bus to kl sentral 10myr
then take genting bus to lower deck
then take skytrain back to genting maxim hotel area ... 10.70myr
total is 20.70myr
which is about 15myr cheaper than taking direct bus.
however is very troublesome , have to queue and wait bus at kl sentral
genting bus depart once every hour. if u miss, have to wait another hour ...