Between Paulina quarterbacking everything, Christian driving us out to the Pyramids and Carlos/Charlie guiding us around in the early morning hours, before the oppressive afternoon heat, it could not have gone smoother. Carlos was engaging, personable and quite knowledgeable, not only about the Pyramids themselves, but also the Aztecs and historical context. The entire process of driving out, being guided and being driven home was seamless. I highly recommend this tour.