They are very friendly, especially if you stay a safe distance and/or take the time to introduce yourself.
The old factory at the stub end of South Washington Avenue is a great place to view thier shop operations. The owners of the site are very friendly and always take time to greet my sons when we are there. Not acting shady, waving in a friendly manner, and introducing oneself to the people in the area goes a really long way. It is private property, so respect the rules and the operations.
Directly across the railroad from that factory are a few roads and parking lots that provide excellent access to the shop location also with no permissions required.
If the shortline is running a train down the Pocono Main, the back side of the college is a great place for viewing from public roads as is a beautiful condo complex called The Mill just to the north of Nay Aug Park. Speaking of...the Davis Trail in Nay Aug Park has a beautiful overlook of the tunnel, accessible only by foot but well worth the short walk. A most dignified war memorial is located on the south end of the trail, dedicated to men from the area who've died in our recent wars. Deeper in the park, poorly maintained, and much less accessible is a memorial to the over 200 (!) men from the area who died in our nation's short involvement in the First World War. Also in the park is an old Gravity Railroad Coach and two mining carts.
I might be chasing that run also, so keep an eye out for a guy in a Marine Corps cover in a Nissan Leaf. Maybe I will actually meet someone from railroad.net face to face!
If you need a place for a free dinner or lunch my wife will be in Prague (6 weeks of unbridled freedom for me!) so feel free to look me up on PlugShare.com and stop by.
Be well. Do good work.