Depending on where you are in Epcot, you have a few other choices. If you're back in the WS area, just exit via the International Gateway, walk over to BC and hop on their MK bus. Then, walk over to the CR..walk is about 8 mins.
Or, exit via the Intl Gateway, take the boat (or walk) to DHS and hop on the bus to the CR. That method would take about an hour as well. I always figure on an hour to get from point A to point B.