CaptainPanda,
I can’t speak to the cancellation policy but they were strict in the following ways:
The group walks down the shaft together, and walks up together, no exceptions.
They will not allow you to use a light.. according to our guide (her name was Amanda and she was great) it’s because that’s how the guides communicate back and forth, but this means you end up having to be right on the lead guide to see what they are showing
They were kind of touchy on video and photo taking. On the first dive, we were told outright no cameras of any kind. On the second dive, when I explained my dad has a dive instruction company and they wanted to advertise a possible trip, I was allowed as long as the guide deemed I wasn’t presenting a hazard or chasing a shot.
the rules are understandable, but I could easily see how some folks could be rubbed the wrong way.