We actually got lost on the way out there and came really really close to missing the train when we arrived 15 minutes late. (Silver lining - I called Miss Crafty Mama to see if she could look up a map for us and became one of the first to find out she was in labor and at the hospital) So give yourself lots of time and remember that there are no signs for anything out there.
After a 30 minute ride & 15 minutes of manuevering to get the train "turned" around, they stop at a park and you can explore the train, tracks, ride a hand car, etc. The staff is so nice & friendly and obviously love what they are doing. Then its 30 minutes back, for a nice 1 1/2 - 2 hour excursion.
Leaving was just a bit traumatic