You arrive, and you are guided by a Roman centurion to your first stop, which is a nail-maker. Now, I'm thinking they wanted to make some kind of connection between this and the nails of the crucifixion, but if they did, it didn't quite come off, but that's okay. Once enough people gathered around the nail-maker working the metal in his fire, you'd be grouped in a tribe, given a fake gold coin and led on to Bethlehem to pay your taxes. (which didn't make sence, because not all the tribes would have gone to Bethlehem to pay taxes, but again...that's okay.)
Your group (we were Zebulon) was then led past various tableaux - Joseph working wood, the Annunciation, the shepherds (with a couple of real sheep), Mary and Joseph getting ready to set forth (with a real donkey! Joseph (ours) couldn't keep his eyes off that particularly strange creature), and then the nativity itself. After the outdoor part, you went to the church basement to pay your taxes to the emperor - an old guy dressed in purple with olive leaves around his head - and browse around their various stalls of Middle eastern food and handiwork, then upstairs to the church where they had dozens of nativity sets on display.
As I said, it was kind of awkward at times, and all the Mary's in the various tableaux looked to be about 45, but it was rather charming. My absolute favorite part happened when you were walking along the path from the shepherds to the nativity. A wire was strung up alongside the sidewalk, about ten feet up, and hooked on the wire was a big star, which moved along with your group..you were following the star! Get it? I liked it.