we wanted to visit Chichen Itza
boarding was fast in the terminal at 10:30 to waiting area with coffee, juice and cookies
11:30 on ship
great
we went to the aquarium and it was awesome 3 hours
we went to turtle beach close to porta maya 12 by taxi.
it was not as good as chankanaab, but 6 per person cheaper and included snorkel gear. it was our 10th trip to Cozumel, had it been our first, Chankanaab would have been the choice. they had outside showers like SXM. Chank has lockers and inside showers with hotwater
2 half hours each way on nice bus with toilet in back, 2 hours at park with guide and headphones. plenty of time to see ruins.....they are old.