User blog comment:MightyUke416/Survivor: Advantage Island - Uke & Just/@comment-25566416-20180325024158/@comment-26485526-20180325024707

They could choose not to take it if they thought it was no benefit to them in the game.

Marielle didn't take the fake HII clue, because she wanted the real one.

Paul didn't take the real HII clue because he didn't want someone to catch him with it, and his mentality was that idols put a target on your back, so they do more harm than good.

Nathan thought doing a camp raid was pointless.

And Karlie didn't want the "Steal a Reward" advantage because she wanted to preserve jury votes, thinking that stealing someone's reward might hurt their feelings.