On a quick search of our members here... on advanced search for location... none for Grand Cayman...but lots for Belize....BUT..... no postings from any of the registered "members" sorry!.... hope you can find something. When we docked in Grand Cayman unfortunately there was a strike going on and they wouldn't let any of the tours operate.... we found a car and guide but as it was Sunday... it was a total waste. I really hope you have success as I know I have seen picture postings from these areas.