Some smaller branches have Saturday hours till 1 pm, although not the central downtown offices. Drive-throughs are also open Saturday mornings.
ATMs are in most grocery stores and at most bank branches.
Most major banks downtown will change currency. There are also several airport locations. The city accommodates people in wheelchairs with curb cuts and ramps and buses with lifts. Emergency Health Care Call 911 for chest pains and other true emergencies. 24 hours a day.