The easiest way to get to CR, is take the bus to MK, then just walk over to CR. The MK bus stops are less than a 5 minute walk.
To WL: Take the bus to MK, then go to the Wilderness Lodge/Fort Wilderness boat dock. Take the boad. you can also stop at FW. Trails End is simply awsome for a meal and quite reasonable.
To GF: Again, take the bus to MK, then go to the GF boat dock, and take the boat.
Another "trip" is to bus to MK, then hop on the resort monorail. It goes MK - CR - TTC - Poly - GF. You can get off at each resort and explore.