Absolutely correct on the PI, its such a simple method and immediately gives an indication of the vessels track.
What I found the most telling, was that no one seemed interested that the voyage would take them close to the islands. I did a similar voyage when on cargo ships, and it was like kids
in the back of the car "are we there yet". Passing a group of islands was something that broke up the monotony of the trip and the ETA of passing was pretty much ingrained.
Still, at least it looked like the owners did the right thing after the grounding.