My wife and I booked a day at Excaret for a Monday. They said they will be picking us up at the Ferry Dock at 7 AM in Cancun next to the Oxx. Should I take the 6 AM or 6:30 Ferry?
6:30 is fine. If you are early birds you could take the 6 and have a leisurely cup of coffee while you wait for your transfer.
Are you talking about XCaret? If so, please make sure to stay for the night performance. I think this is the best part of the park. I can't imagine visiting XCaret and not seeing this. It is really good.
Yes, the evening show is a real highlight, but if you stay for it you will have a long trip back to Isla at night. We were staying on the mainland when we did it and it was quite late when we got back to our hotel.