Ok. Let's redo the maths then.
21-23 Sep: RM333+RM100 = RM433 or S$146
28-30 Sep: RM428+RM100 = RM528 pr S$176
Add in the coach $85 and total will be S$230 and $261 respectively if u going alone.
Still cheaper than the $320 that you were quoted.
If you going with your partner, then it will be S$315 and S$346.
Still cheaper than S$380 that you were quoted.
If you booked with Genting direct, your reservation details will be in their system. Once you reached FWH, you can use the Self-checking kiosk to book in. Doing it over the counter will cost an extra RM15.
Any other queries. Just ask.
[UPDATE] Let me do you a solid.
This is the current rate for FWH Standard Room for guest (non-members) for Sep and Oct. You can see the rate for yourself and plan accordingly.