None but they aren't noted for lining people up by the thousands and sacrificing them (the Aztecs did that) and the era of the great Mayan cities was over long before the Spanish showed up. It's the archaeology (buildings, clothing, art) that is supposed to be correct in this film, not the culture of human sacrifice.
Interesting. I have to wonder why Mel crossed the Aztec rituals over to the Mayans. I guess to make a big movie, huh.