I'm going to stay for three nights. I know resort fee is 25 dollars a day. I heard that you can use 20 dollars a day for resort fee. Is it possible?

The $20 a day is for food and beverage. I'm not aware of being able to use it to pay down your resort fee. If that is what you're asking.

Yes. You can use it at the restaurant, bar or store inside the hotel.

Yes. If its part of your booking. We got 20 credit per day to spend at the hotel.

No