Take the MK bus from the Swan and then you have two options....get off the bus and head for the pathway to the CR and walk, it's about an 8 minute walk. Or you can head for the monorail platform at the MK and take the monorail to the CR. When you get off the bus, head for the main entrance to MK. If you want the pathway, stay to the right and go underneath the monorail line above you. Follow it to the CR. If you choose the monorail, then stay to the left, as if you were going to head for the entrance to MK, but rather than go right to MK, stay headed straight up the ramp area to the monorail platform.
To return to the Swan, if MK is still open, then just hop on the bus back to the Swan. If not, take the CR bus to DTD and transfer to the Swan bus there. Or, just take a cab.