This is not the kind of place you visit over and over. It is very unique and certainly worth while to see once however. Make this a rainy day event (so you give up no beach time in Bermuda) and it a nice way to pass a few hours.
We were worried it would be cold down in the caves like we are used to at home. We couldn't be more wrong. With all the warm ocean water in them they are more like a steam room!
If rushed, or just conserving money, you really don't need to do both caves, just Crystal. We have no regrets about doing both, it is just that they really are not that different.
If you own or manage Crystal & Fantasy Caves, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.