I've been in Hamburg to witness the unloading every year since I was a baby! Three (soon to be four) generations of my family have witnessed Strates arrival. 3 or 4 years ago my father and I were featured in a Buffalo News article for our consistent appearance at the unloading. Never in all those years have I, or anyone I was with been asked to leave. Just keep out of the way, don't touch the equipment, don't bother the carnies and enjoy the sights!!! I've found the best place to park is at the corner of West Ave. & Union St. there are two large parking lots which are usually vacant.
Keep in mind, Artcraft is now located in the old depot, right there where they unload. They are even posting info on there website when to expect the train in.
http://artcrafttoytrains.com/wnew.htm