if they include a golfcart for you it is manageable, even that it still is more than just a 5 minutes ride. the property is on the grounds of the large white sands property, your entering point for the beach is to drive around the golfcourse and enter the hotel Punta Cana Princess, there is the access way to the nearest beach, a good 10 minutes golf cart ride on the road around the course, the street on the last section is very very bumpy for a golfcart. i am there often to take care about a buddies Condo when he is away, never realized golf cart traffick on that road, so make sure they have one ready for you, without a car you are too far away for a walk to the beach, and add that you may want to carry some stuff and drinkets etc to the beach.
Mike