Share 'Booking Tours'

Do you think it is best to book tours online from home or to do it from our Concierge at our hotel (Sandos) when we get to Playa in a few weeks? We plan to go to XCaret, Cozumel, visit ruins, snorkel the reefs, jetski, swim in cenotes, and more but time is limited to just 8 days! Which ruins do you think we should see and why? (We do not want to spend a whole day getting to the ruins and hangin...