The subject line of this post: http://www.wgt.com/forums/t/70324.aspx didn't cover it's real value, IMHO.
I've often wished for a way to play a certain regular hole over and over until I understood the details of green terrain, etc. etc. The link above tells you how to access any hole on any of the full-play WGT venues. The caveats are that you'll tee off from the short tees and green speed is STANDARD.
Have fun out there!