Yes you can but I wouldn't recommend it unless you have tons of time.
It stops at all four resorts in the Epcot area and it can take quite a while to get back and forth from the BC to DTD. We did it once and then took the rental car the other time we went.
We loved the BC's location in proximity to EPCOT and MGM, but our bus line waits, and trips to other locations within WDW seemed to be much longer as compared to other delux resorts we've stayed at.
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