I visited Tikal when I was in Guatemala nearly eight years ago and while it would have been awesome to join them, it wasn't a place I relished visiting with a baby (especially since there is actually some malaria risk there). So, Luke & I hung out in Antigua for the two days they were gone and had fun exploring the city further.
Jason took some great pictures of their trip:
They got to stay right inside the park, at the Tikal Inn. Nice!
What the "sunrise tour" looked like the following morning --- no SUN! :(