Ah ok, you have the advantage of an extended guide. And it makes more sense to hold off on that advantage until then so they have almost the entire jury to chose from.I think that description means that one contestant is the swing vote, most likely who ever wins immunity, that will decide which person will go.
In Foxtel's guide this is what it says for next Sunday: "After 50 testing days on the island of Samoa, the final four contestants go into the challenge not for immunity but for an advantage to eliminate a member of the jury at tribal council".
OK well I will rethink my tips for this coming week in that case, thanks.