Originally posted by Moustronaut
Yes... all disney transportation is open to any resort guest anywhere. Take a bus to Port Orleans Riverside or Port Orleans French Quater to catch the boat.
I'm pretty sure CBR does not have a water shuttle. It's only serviced by Disney Buses. The water shuttle you are talking about runs from Epcot International Gateway to Yacht and Beach Club, to Disney's Boardwalk, to Swan and Dolphin, then to MGM and back along the same route. Easist way to get to that water shuttle from CBR is to hop a bus to MGM and board the water shuttle there since you don't have to go into the park to transfer.
And since you might be in the neighborhood of the Boardwalk and the Swan and Dolphin, might want to check out mini golf at Fantasia Gardens. It's cute and fun but watch out for those brooms with water buckets. It's located right across the street from the Swan I think