Adventure Awaits Bonus Content
(from Pre-Ordering the Pack)

Those are custom versions of the bonus content that players could get for pre-ordering The Sims 4 Adventure Awaits back in 2025.

Since there's no way to unlock the items, like with the rewards from live events, I've set it up so that if you put down a lot that contains an original item which you're missing, the game replaces it with my own custom ones as a fallback object.

Problematic is the "Toasty Tootsies Socks" CAS item as EA didn't implement a fallback system for CAS items at all -- unlike what they did for BB items. So as of now, you'd need to put my cc versions for all preorder CAS items manually back to your sim.