Thanks everybody! Those blue drinks were free Margaritas! We got free drink coupons at the Grand Cayman Margaritaville and then used them at the Cozumel one. The bartenders saw that we were trying to set up a pic with Crazie and let us use all the other bottles! BTW it was my son's first drink. He'll be 20 in May but the drinking age in Mexico is 18. He liked it! Now he wants to go across the border to Canada (drinking age is 19 there) with his buddies. I hope we didn't create a monster!
Many people did the zip-line there and, as you said, some snorkeling and diving. It was actually kind of sad to see the deplorable living conditions. It makes you even more grateful for what you have.
A moment I think of often is the first time I set foot on a cruise ship in 2002. I was in awe! And I re-live that feeling every time I set foot on a ship!