If I were you I would cancel even though it took 10 minutes on line to get the correct answers to the questions you wanted answered. As to the internet access you are in the middle of the ocean and there could be issues. No worse flying on the airlines.
Believe it or not, barnacles are edible and delicious! That's right, these creatures, commonly considered to be pests of the sea, can be harvested and prepared like any other seafood (provided they're the right kind, of course).