Chichen Itza - On the Friday 21st Sept I am led to believe that there is something called the autumn equinox in which there is a festival taking place. Both me and my girlfriend was wondering whether or not it would be a good time to visit on this day or would it be to busy to even bother trying to go? Does this event affect the usual layed out tours?
I think the regular daily tour leaves before sunset and the light and sound show (that stays later) is only on a Wednesday. The overnight tour may be the only option, but I've sent an email to ask and will post when I get a reply.
Just got word from Eplus that the Classico and Explorer tours will stay later that day for the equinox, same price. Here's the link: Chichen Itza with Eplus
For those with less of a constraint on your holiday, first work in a visit to Dzibilchaltun north of Merida to catch the equinox (at sunrise, the sun peeks through the "Temple of the Seven Dolls" or something), and then take a car to Chichen to see the event in a different way.