I am not a stingray expert but it seems the stingrays at Grand Cayman are a bit spoiled as they are fed by all the tourist and are more docile;
I did the stingray tour the day after the Steve Irwin experience and was scared $hitless - but we made it back safe.
you still have to do the stingray shuffle to avoid stepping on their tail (barb is on their tail);
here is an article that may set your minds at ease
http://www.cruisetraveldirectory.com...gray_City.html[/img]