How do I complete mt komorebi

Hmm, so townies will always succeed, I wonder about played/playable sims in another house? Like, say your sim's adult child has moved out and you invite them along but you know they don't have level six rock climbing?

Might have to try this out! It does seem strange that they would allow you to invite someone who can't possibly physically succeed, maybe it kinda gives guests an invisible temporary 'can climb anything' buff to ensure you can succeed.