We used in December. They ran often and didn't have to wait much. We were at first stop and so a long ride. However, we noticed buses were full sometimes by the time they got to the last stop. Not sure how early . . .
We stayed on Miller’s Rd in November. No problems getting on buses, we never tried for rope drop. We drove our vehicle to the MK because we had a late dinning reservation at the Contemporary. I don’t recall anyone not getting on the bus, except for maybe leaving the park or DS at close, but another bus was there quicker than normal, less than 5 minutes.