Originally Posted by
moral_low_ground
The only thing you should have to pay is the Tourist fee which is a fixed cash amount per day (typically 15 AED per day or around $4 USD depending on quality of hotel booked)
If you use cash and points then there will be the cash + 10% + 10% +5% + Tourist fee
Many people get caught out by the large and often un-noticed taxes which get added to the bill when they checkout
We were there a few weeks ago and had 2 rooms, one paid and one on points. We didn't have to pay the tourist tax on the Award room.