Please, go and enjoy, but keep in mind, as "Deb & Bill" stated, there is not much in the way of actual trains to see. There is the glass case two car train display, donated by Walts daughter I beleive, but there isn't really much "kid Level" stuff to see. Lots of pictures on the wall.
It really is a place of peace and quiet, a place to sit and enjoy family, a place to get away from the "hub-bub" that The World can generate.
DW and I love it, and have had a VWL Groupie meet in the room. For adults, it helps you focus on Walts love of Trains. And although Walt loved trains, it was Michael Broggie that made it come true as we see it today at WDW.
Next time you are in The World, sign up for the Steam Train Tour. It is great and offers a wonderful behind the scenes of Walts beloved hobby, and the day to day operation of the Steam Trains around the Magic Kingdom.
Enjoy the World - Feel the Magic!