Anyone purchased units here? Can you advice if JL99 promised free entry to wonderland park?

Room partition? you mean from 3 rooms and made up to 6 rooms (just reduce the living and dining hall space).
Last time very common for those house unit near prime area (center business district like SS21 PJ), univerisity college (such as TARC Setapak)

But hard may be hard as the local council, bomba etc may come and fine you.
Because can't simply change the layout, basically need to apply
.....

As if kl is a financial centre like London, NYC; high pay and long hours; many live near office during week days and return to countryside for weekend.