"Teatime railcars".... interesting.
I am guessing that the railcar set used on the Cork - Bantry service was swopped for maintenance purposes at this time with another set from Glanmire? The evening service left Albert Quay for Bantry at 18:30, I think, so if they were swopping them it would make sense for the set coming in from Bantry earlier, to have crossed the tramway to be replaced by another in late afternoon, in time for the evening down departure? Does that sound about right?
I only saw the place once myself, and that was just weeks before it closed. I wandered in, took a few pics, and wandered back - no signs of life that day in the place, and few wagons.