Don’t miss out on a chance to see one of the New Seven Wonders of the World because you’re worried about the crowds! The majority of people visit Chichen Itza on a day trip from Cancun, but it’s worth staying a night in Valladolid (a pleasant colonial town- especially pretty at night), and then jump on a half an hour bus to Chichen Itza at around 8 or 9am.
You will avoid the hoards of tourists that turn up at 11am, and the midday heat. Win win!
Check out my tourist-free pics