Yes, I learned this on a stay at the O&O Hayman Island. There was no advanced notice, just some small print on the back of a paper you signed during the transport (boat) to the island. I was surprised, and mentioned I was surprised when checking out. They said that I knew about it, and signed the paper. I told them that I only found out about it right before we docked at the island, and wondered if I disagreed would they turn the whole boat around with all the other guests on board. They didn't take checks, I guess they thought I would have 18k in cash in a suitcase. I don't like it, but at least I am happy if there is a notice at reservation time, rather than once you get there.