I went back and looked at the card again: the people on board are initiates, and the people on the left (with the food) are getting ready to drop an offering in the sea to Agwe, as a guarantee of safe passage.
So reversed could also speak of UNsafe (mental) passages...like you said: stuck with people for a longer time than ordinary and things better left unsaid just come out, which are a reflection of thoughts that most people tend to keep under wraps.
Kinda like
Survivor and
Lost combined...or any sci-fi movie that requires an unlikely group of people banded together for survival purposes.