Originally Posted by Flying Machine

Typically on hotels.com when making a reservation in advance, they will quote your price in your local currency from where you're booking, so if you're in the US it will be in USD. Then they'll have a conversion rate based on their rate of exchange on the date when you're making the booking. That's the rate lwhat you will have to pay at the hotel, if it's not a prepaid rate. If that's the case then the blue will work well for you