Hi Bruce and Barb,
Money changers at the airport are open for all arrivals (anytime), even later in Grand Baie lots of business is open until noon.
Usually reception changes 24/7, but the exchynge rate is not so favourable.
Hotel is situated opposit to beach (50 m), beach is one of the most beauiful ones (Mont Choisy<). As the hotel is new, I dont't have any information about service, etc.
Car rental: please note that car rental in hotels is usually more expensive, but as an advatage you get the car delivered and picked up.