We did the Hidden Gems tour last June. Our guide was the the owner Ashley. Regarding the cave swimming area - She took us to a section of the jungle that only her company is said to have access to. While there there was another tour from Hidden Gems and both Ashley and that tour guide made sure to let other people on there own that this part was a restrictive area that it was privately owned and permission was needed to access it. Now there might be other caves you can go to and experience, I have no knowledge on that. Ashley also took us to other areas of the island and had a yummy lunch at a resturant that will only serve the Hidden Gems tour at lunch. It was a great tour of the whole island and Ashley was a wealth of information about Bermuda.