I believe the Sheraton has a three day minimum requirement during that time period to book a reservation. Also my favorite Restaurant in the world is in Rio, You must go there Called BARA GRILL. They will pick you up and return you for free from most hotels in RIO. About $20 USD For all you can eat. Just the best! I actually redeemed from my ONEPASS account one of those half off awards just to go to RIO to eat at this restaurant last month.