This is probably the wrong thread but I searched and couldnt find anything on the parking toll booths, but there are new red and green traffic signal lights installed at the toll plaza. So far they are not operating but will make it easier to see which gate is openwhen they do.
Yes there us a bus stop that services the park by the water tower. Also shuttles from many hotels and I think CW still runs one from the visitor center. Also there is a no charge drop off line for cars to drop off and leave so Uber or other forms of Taxi are options.