My wife and I are going to be in Cozumel next week...we'll be there for a week. We have already booked the dolphin swim at Chakanaab and plan to spend the whole day there. We want to also go see Chichen Itza while we're there and understand it would be smartest to get there on our own rather than through a tour company. Can anyone advise us of the best way to do this? We are planning on spending the entire day there.