On 6/8/16 at approximately 7:30 pm there was a bus running from MK to DHS. I assume there always is, but I only know about that one specific night for sure.
MK does have a bus to at least the Wilderness lodge which has water service also. They don't run the boats in storms. Last year we got off the monorail at MK and were debating whether to take the boat back to WL or the bus as it looked like it was about to storm. Figured the boat would be faster so we went to get in line. The storm was faster thatn the boat we were waiting for so we ended up being sent to the bus stop anyway.