To the OP, at ANY
DVC resort, when you make a room request for medical reasons (first floor because of your wife's condition) be sure you state to Member Services it is for medical reasons, otherwise the room assigners or check-in CM (depending upon if they pre-assign or do room ready) will have no idea why a first floor room is requested...and then a request is "just a request, but not guaranteed."
As far as your bus experience...sorry, that should not have happened, but the bus driver should have been in control of that bus for guests safety, including the fight. A crowded bus does not necessarily lead to fights or safety issues, but a fist fight is certainly a safety issue that should have been addressed by the driver...he/she should have called security.
I am assuming it was the DtD/PI bus where the fight happened...mix too much alcohol and testosterone, and fights will occur...Disney or not...again security should have been summoned by the bus driver immediately...but that is not a resort specific issue. Usually OKW bus service has been no better or worse than any other resort, DVC or not.
As far as the rude clerks at the store, very subjective..they may very well have been rude...they may not, we really don't know, we weren't there. It certainly has not been my experience to have rude clerks at the General Store, and we have been at OKW at least 35 stays in 15 years.
As far as your 35 minute check-in, the wait was likely every bit at long at SSR and any other DVC resort during that time frame...there is no way to compare it.