The clothing you describe is definitely Amish. Was there a buggy nearby?
They could have been traveling, and stopped at the station so their van driver could refuel and everyone could use the restroom and purchase snacks too. They hire vans to travel beyond the range of the horses which is usually about 6 miles.
No buggy . That is what threw me off. They all bought Mcdonalds.
I am sure they get a lot of stares .
They were blonde and I immediately thought of that serial killer hair cut. Then I felt bad.