Colo's right....it's a very long day. But....the ruins are awesome. I think the ferry ride was a little shorter, maybe 20-30 minutes, but I could be wrong. The bus ride wasn't so bad because our guide was very informative about the Mayan culture. They also break it up with a bathroom stop at a touristy-trap kind of place. Then on the ride back they gave us a snack and free Mexican beer. It was very HOT at the ruins but the bus driver closed all of the curtains on the bus and kept the air on all day so when we got back on the bus it was like, "AAaaaahhhhh......"
I just posted some pics from our Triumph cruise in the photo gallery on this site. I didn't realize that they were that close to the ocean.....the views are incredible.