Dear Cheryl,
Lest start with that on your tour, on September 9th at 12:00, there were just 5 kayaks beside yours.
I also know without a doubt, that all 3 members of our team are extremely careful and helpful. The guide during kayaking part always makes sure everyone is well informed, in few different languages including English, and I am sure of it. He also helps with paddling technique and landing on sand that you mentioned. The sea conditions were perfectly fine on that day.
Regarding other tourists in the cave, and other companies working with boats - there is not much that can be added. There is even a hole in that cave so the smell of fuel can go away easily :-). We also wish to have this gem just for ourselves, but those times are long gone.
We are sad to hear you did not enjoy the experience.
Kind regards,
Aleksandra