Gas was 5.78 CI per LITRE?? $7 a LITRE or gallon?? And the car rental was $100 a DAY?? Yikes. I've actually only visited Cayman on cruise ships and I am not a diver and not a particularly good snorkler, so Cayman has never really appealed that much, so we have not stayed on island. But, based on how much your meals cost, and the cost for a car, I don't think I could afford it..